萨斯::语法错误：错误的参数个数（5 4）`RGBA”

Question

我改变我的应用程序的CSS，当我一直想的Heroku推了推消息返回以下错误：

这里是CSS：`

.subHeading{ 
display:block; 
font:2.357em/1.151em 'PT Sans', Arial, Helvetica, sans-serif; /*33px/38px*/ 
margin:0 0 1em; 
text-align:center; 
color:#7a7a7a; 
text-shadow:0px 1px 1px rgba(255,255,255,0.5); 
} 

.grey{ 
background:#7e8794; 
color:#fff; 
border-bottom:1px solid #f6f6f6; 
border-top:1px solid #f6f6f6; 

-moz-box-shadow: inset 0 6px 6px -6px rgba(0,0,0,0.75), 
      inset 0 -6px 6px -6px rgba(0,0,0,0.75); 
-webkit-box-shadow: inset 0 6px 6px -6px rgba(0,0,0,0.75), 
      inset 0 -6px 6px -6px rgba(0,0,0,0.75); 
box-shadow:   inset 0 6px 6px -6px rgba(0,0,0,0.75), 
      inset 0 -6px 6px -6px rgba(0,0,0,0.75); 
} 
.grey h1{ 
color:#fff; 
text-shadow:0 1px 2px rgba(0,0,0,0.5); 
} 
.grey h2{ 
text-shadow:0 1px 2px rgba(0,0,0,0.5); 
} 
.grey .subHeading{ 
color:#d9e7fb; 
text-shadow:0 1px 1px rgba(0,0,0,0.5); 
} 

* +html .btn{margin:0;} 
.btn span{ 
color:#fff; 
padding:0 1.25em; 
display:block; 
text-shadow: 0px 0 rgba(0,0,0,0.31), 0 1px rgba(0,0,0,0.5), 0px 0 rgba(0,0,0,0.5), 0 0px rgba(0,0,0,0.5); 

-moz-box-shadow: inset 0 0px 3px 
rgba(255,255,255,255,.75); 
-webkit-box-shadow: inset 0 0px 3px rgba(255,255,255,0.75); 
box-shadow:   inset 0 0px 3px rgba(255,255,255,0.75); 

-webkit-border-radius: 1.25em; 
-moz-border-radius: 1.25em; 
border-radius: 1.25em; 
} 
.btnSmall{ 
padding:0.278em; 
text-decoration:none; 
font-size:1.214em; 
line-height:2.35em; 
background:#798493; 
font-weight:bold; 
border:1px solid #505a68; 

-webkit-border-radius: 1.47em; 
-moz-border-radius: 1.47em; 
border-radius: 1.47em; 

-webkit-transition: background 0.5s ease; 
-moz-transition: background 0.5s ease; 
-o-transition: background 0.5s ease; 
transition: background 0.5s ease; 

-moz-box-shadow: 0 1px 1px rgba(255,255,255,0.36); 
-webkit-box-shadow: 0 1px 1px rgba(255,255,255,0.36); 
box-shadow:   0 1px 1px rgba(255,255,255,0.36); 
} 
.btnSmall span{ 
color:#fff; 
text-decoration:none; 
padding:0 1.47em; 
display:block; 
text-shadow: 0px 0 rgba(0,0,0,0.31), 0 1px rgba(0,0,0,0.5), 0px 0 rgba(0,0,0,0.5), 0 0px rgba(0,0,0,0.5); 

border:1px solid #566270; 
background:#606a78; 
background-image: linear-gradient(bottom, rgb(98,119,149) 0%, rgb(160,188,226) 100%); 
background-image: -o-linear-gradient(bottom, rgb(98,119,149) 0%, rgb(160,188,226) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(98,119,149) 0%, rgb(160,188,226) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(98,119,149) 0%, rgb(160,188,226) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(98,119,149) 0%, rgb(160,188,226) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(98,119,149)), 
    color-stop(1, rgb(160,188,226)) 
); 

-moz-box-shadow: inset 0 2px 2px -2px 
      rgba(255,255,255,255,.75), 
      inset 0 0 0 #fff; 
-webkit-box-shadow: inset 0 2px 2px -2px rgba(255,255,255,0.75), 
      inset 0 0 0 #fff; 
box-shadow:   inset 0 2px 2px -2px rgba(255,255,255,0.75), 
      inset 0 0 0 #fff; 

-webkit-border-radius: 1.25em; 
-moz-border-radius: 1.25em; 
border-radius: 1.25em; 
} 
.btn:hover { 
background:#1b4648; 
background:rgba(0,0,0,0.2); 
} 
.btnSmall:hover span{ 
background-image: linear-gradient(bottom, rgb(109,131,164) 0%, rgb(169,199,241) 100%); 
background-image: -o-linear-gradient(bottom, rgb(109,131,164) 0%, rgb(169,199,241) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(109,131,164) 0%, rgb(169,199,241) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(109,131,164) 0%, rgb(169,199,241) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(109,131,164) 0%, rgb(169,199,241) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(109,131,164)), 
    color-stop(1, rgb(169,199,241)) 
); 
} 

.btnGreen span{ 
border:1px solid #5e9048; 
background:#75cf44; 
background-image: linear-gradient(bottom, rgb(80,153,46) 0%, rgb(117,207,68) 100%); 
background-image: -o-linear-gradient(bottom, rgb(80,153,46) 0%, rgb(117,207,68) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(80,153,46) 0%, rgb(117,207,68) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(80,153,46) 0%, rgb(117,207,68) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(80,153,46) 0%, rgb(117,207,68) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(80,153,46)), 
    color-stop(1, rgb(117,207,68)) 
); 
} 
.btnBlue span{ 
background:#52b3d3; 
border:1px solid #67a2b4; 
color:#fff; 

background-image: linear-gradient(bottom, rgb(66,153,179) 0%, rgb(82,179,211) 100%); 
background-image: -o-linear-gradient(bottom, rgb(66,153,179) 0%, rgb(82,179,211) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(66,153,179) 0%, rgb(82,179,211) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(66,153,179) 0%, rgb(82,179,211) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(66,153,179) 0%, rgb(82,179,211) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(66,153,179)), 
    color-stop(1, rgb(82,179,211)) 
); 
} 
.formRow{ 
width:100%; 
margin:0 0 1.5em; 
} 
.formRow:after{ 
content:""; 
display:block; 
clear:both; 
} 
.textField{ 
width:100%; 
overflow:hidden; 
border:1px solid #505a68; 
background:#798493; 
font-weight:bold; 
padding:0.5em; 

-webkit-border-radius: 2em; 
-moz-border-radius: 2em; 
border-radius: 2em; 

-webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */ 
-moz-box-sizing: border-box; /* Firefox, other Gecko */ 
box-sizing: border-box; 

-moz-box-shadow: 0 1px 1px rgba(255,255,255,0.36); 
-webkit-box-shadow: 0 1px 1px rgba(255,255,255,0.36); 
box-shadow:   0 1px 1px rgba(255,255,255,0.36); 
} 
input, 
textarea{ 
display:block; 
background:#fff; 
font:1em/1.214em Arial, Helvetica, sans-serif; /*14px/17px*/ 
color:#444; 
width:100%; 
padding:0.75em 1.5em; 
border:1px solid #505762; 
margin:0; 

resize:none; 

-moz-box-shadow: inset 0 0px 3px rgba(0,0,0,0.75); 
-webkit-box-shadow: inset 0 0px 3px rgba(0,0,0,0.75); 
box-shadow:   inset 0 0px 3px rgba(0,0,0,0.75); 

-webkit-border-radius: 1.5em; 
-moz-border-radius: 1.5em; 
border-radius: 1.5em; 

-webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */ 
-moz-box-sizing: border-box; /* Firefox, other Gecko */ 
box-sizing: border-box;   /* Opera/IE 8+ */ 
} 
textarea { 
overflow:auto; 
height:10.812em; 
} 
* +html input, 
* +html textarea, 
* +html .textField{ 
width:99%; 
padding:0; 
} 
::-webkit-input-placeholder { 
color: #444; 
} 
:-moz-placeholder { 
color: #444; 
} 
.columns{width:100% } 
.columns:after{ 
content:""; 
display:block; 
clear:both; 
} 
.columns > div, 
.columns > article{ 
float:left; 
vertical-align:top; 
} 
.columns h2{text-align:left;} 
.half{ 
width:48.0%; 
margin:1.3%; 
} 
.oneThird{ 
width:32%; 
margin:1%; 
} 
.columns > div:first-child, 
.columns > article:first-child{margin-left:0;} 
.oneThird +.oneThird +.oneThird, 
.threeForth + .oneForth, 
.oneForth + .half, 
.half + .half, 
.half + .oneForth + .oneForth, 
.last{ 
float:right; 
margin-right:0; 
} 
.oneForth{width:25%;} 
.threeForth{width:74.5%;} 
.buttons{ 
width:100%; 
overflow:hidden; 
text-align:center; 
margin:2.5em 0 0 
} 
.buttons > span{ 
background:url(../img/sep-vert.gif) no-repeat 50% 50%; 
display:inline-block; 
font-size:1.714em; 
line-height:1.125em; 
padding:1em 0.75em; 
margin:0 -1px 0 -2px; 
} 
* +html .buttons > span{margin:0 20px;} 
.buttons > span em{ 
font-style:normal; 
display:block; 
background:#eaeaea; 
} 
.imgHolder{ 
display:inline-block; 
padding:1px; 
background:#fff; 
border:6px solid #cecece; 
margin-bottom:1em; 
max-width:100%; 
overflow:hidden; 

-webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */ 
-moz-box-sizing: border-box; /* Firefox, other Gecko */ 
box-sizing: border-box;   /* Opera/IE 8+ */ 
} 
* +html .imgHolder{ 
max-width:93.5%; 
border-width:3%; 
padding:0; 
} 
.imgHolder img{display:block;} 
.grey .imgHolder{ 
border-color:#646e7d; 
} 
/*main styles*/ 
#pagewidth {width:100%;} 
#header{ 
position: fixed; 
z-index:100; 
left: 0; 
top: 0; 
height:49px; 
width:100%; 
overflow:hidden; 
padding:1.143em 0; 
background:#404751; 

-moz-box-shadow: inset 0 0 0 #fff, 
      inset 0 -20px 20px -20px rgba(0,0,0,0.75); 
-webkit-box-shadow: inset 0 0 0 #fff, 
      inset 0 -20px 20px -20px rgba(0,0,0,0.75); 
box-shadow:   inset 0 0 0 #fff, 
      inset 0 -20px 20px -20px rgba(0,0,0,0.75); 
} 
#content{padding:82px 0 0;} 
#mainNav{text-align:center;} 
#mainNav li{ 
display:inline-block; 
margin:0 7px; 
} 
#mainNav a{ 
color:#fff; 
position:relative; 
display:inline-block; 
padding:0.278em; 
text-decoration:none; 
font-size:1.214em; 
line-height:2.35em; 
background:#2d3239; 
font-weight:bold; 

-moz-box-shadow: inset 0 0px 3px rgba(0,0,0,0.75); 
-webkit-box-shadow: inset 0 0px 3px rgba(0,0,0,0.75); 
box-shadow:   inset 0 0px 3px rgba(0,0,0,0.75); 

-webkit-border-radius: 1.47em; 
-moz-border-radius: 1.47em; 
border-radius: 1.47em; 
} 
#mainNav a span{ 
color:#fff; 
text-decoration:none; 
padding:0 1.25em; 
display:block; 
text-shadow: 0px 0 rgba(0,0,0,0.31), 0 1px rgba(0,0,0,0.5), 0px 0 rgba(0,0,0,0.5), 0 0px rgba(0,0,0,0.5); 

border:1px solid #202329; 
background:#606a78; 

background-image: linear-gradient(bottom, rgb(65,72,82) 0%, rgb(96,106,120) 100%); 
background-image: -o-linear-gradient(bottom, rgb(65,72,82) 0%, rgb(96,106,120) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(65,72,82) 0%, rgb(96,106,120) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(65,72,82) 0%, rgb(96,106,120) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(65,72,82) 0%, rgb(96,106,120) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(65,72,82)), 
    color-stop(1, rgb(96,106,120)) 
); 

-moz-box-shadow: inset 0 2px 2px -2px 
      rgba(255,255,255,255,.75), 
      inset 0 0 0 #fff; 
-webkit-box-shadow: inset 0 2px 2px -2px rgba(255,255,255,0.75), 
      inset 0 0 0 #fff; 
box-shadow:   inset 0 2px 2px -2px rgba(255,255,255,0.75), 
      inset 0 0 0 #fff; 

-webkit-border-radius: 1.25em; 
-moz-border-radius: 1.25em; 
border-radius: 1.25em; 
} 
#mainNav a:active{ 
top:1px; 
} 
#mainNav a:hover span , 
#mainNav li.active span { 
background-image: linear-gradient(bottom, rgb(71,83,101) 0%, rgb(123,145,177) 100%); 
background-image: -o-linear-gradient(bottom, rgb(71,83,101) 0%, rgb(123,145,177) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(71,83,101) 0%, rgb(123,145,177) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(71,83,101) 0%, rgb(123,145,177) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(71,83,101) 0%, rgb(123,145,177) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(71,83,101)), 
    color-stop(1, rgb(123,145,177)) 
) 
} 
.gallery{ 
background:url(../img/sep-hor.gif) no-repeat 50% 0; 
padding:2px 0; 
position:relative; 
margin:0 auto; 
width:81.25%; 
position:relative; 
} 
.gallery:after{ 
content:""; 
position:absolute; 
bottom:0; 
left:0; 
background:url(../img/sep-hor.gif) no-repeat 50% 0; 
width:100%; 
height:2px; 
} 
.news > div{ 
border:1px solid #505a68; 
position:relative; 
padding:0 0 50px; 
margin:0 0 30px; 
height:1%; 
} 
.news > div:after{ 
content:""; 
display:block; 
clear:both; 
} 
.news h3{ 
font-size:1.714em; 
line-height:2.583em; 
text-align:center; 
margin:0 0 0.83em; 
border-top:1px solid #909eb2; 
border-bottom:1px solid #545b65; 
background:#5d6a7c; 

background-image: linear-gradient(bottom, rgb(93,106,124) 0%, rgb(126,137,153) 100%); 
background-image: -o-linear-gradient(bottom, rgb(93,106,124) 0%, rgb(126,137,153) 100%); 
background-image: -moz-linear-gradient(bottom, rgb(93,106,124) 0%, rgb(126,137,153) 100%); 
background-image: -webkit-linear-gradient(bottom, rgb(93,106,124) 0%, rgb(126,137,153) 100%); 
background-image: -ms-linear-gradient(bottom, rgb(93,106,124) 0%, rgb(126,137,153) 100%); 

background-image: -webkit-gradient(
    linear, 
    left bottom, 
    left top, 
    color-stop(0, rgb(93,106,124)), 
    color-stop(1, rgb(126,137,153)) 
); 
} 
.news h3 a{ 
display:block; 
text-decoration:none; 
text-shadow:0 1px 2px rgba(0,0,0,0.5); 
} 
.news .content{ 
width:83%; 
overflow:hidden; 
margin:0 auto; 
} 
.news .readMore{ 
position:absolute; 
top:100%; 
margin:-2.143em 0 0; 
width:100%; 
text-align:center; 
} 
.slides{ 
list-style:none; 
overflow:hidden; 
padding:0; 
width:100%; 
} 
.slides li{ 
padding:0; 
display: none; 
position:relative; 
background:url(../img/sep-vert.gif) no-repeat 50% 50%; 
} 
* +html .slides li{ 
display:inline; 
zoom:1; 
margin:0; 
} 
.slides blockquote{ 
float:right; 
width:48%; 
margin:2.5em 0 0; 
} 
.slides blockquote:first-child{float:left;} 
#map{ 
border:1px solid #535d6b; 
padding:0.428em; 
background:#798493; 
margin:0 0 1em; 
} 
#map .imgHolder{ 
height:1%; 
overflow:hidden; 
background:#fff; 
padding:1px; 
border:0; 
margin:0; 
display:block; 
} 
#map .imgHolder img{ 
width:100%; 
} 
.form{width:92%;} 
#testimonials{ 
margin-top:-2.857em; 
} 
#testimonials .row{ 
padding:0; 
background:url(../img/sep-hor.gif) no-repeat 50% 1.5em; 
} 
#testimonials .row:first-child{ 
background:none; 
} 
#testimonials{background:none;} 
#testimonials:after{display:none;} 
#footer{ 
width:100%; 
overflow:hidden; 
padding:24px 0; 
color:#fff; 
line-height:16px; 
} 
#footer a{ 
color:#fff; 
} 
#footer .copy{float:right;} 
#message p{margin: 0;} 
.error_message{ 
padding: 5px 10px!important; 
border-width: 2px !important; 
background:rgba(247,0,0,0.5) !important; 
margin: 0 0 15px; 
} 
.ok_message{ 
padding: 10px 15px!important; 
background:rgba(57,143,20,0.5) !important; 
margin: 0 0 15px; 
} 
} 

这是我参考了终端：

-----> Preparing app for Rails asset pipeline 
    Running: rake assets:precompile 
    I, [2014-09-22T13:27:18.698645 #606] INFO -- : Writing /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/public/assets/application-4d89252671a18b5c14713d875d619d90.js 
    rake aborted! 

这是这行，我不明白：

Sass::SyntaxError: Alpha channel 255.75 must be between 0 and 1 for `rgba' 
    (in /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/app/assets/stylesheets/application.css) 
    (sass):391 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/funcall.rb:162:in `rescue in _perform' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/funcall.rb:99:in `_perform' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/node.rb:40:in `perform' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/list.rb:71:in `block in _perform' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/list.rb:71:in `map' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/list.rb:71:in `_perform' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/script/node.rb:40:in `perform' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:298:in `visit_prop' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:100:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `block in visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `map' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:121:in `with_environment' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:108:in `visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `block in visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:320:in `visit_rule' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:100:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `block in visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `map' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:121:in `with_environment' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:108:in `visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `block in visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:362:in `visit_media' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:100:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `block in visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `map' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:53:in `visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:121:in `with_environment' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:108:in `visit_children' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `block in visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:128:in `visit_root' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/base.rb:37:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:100:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/visitors/perform.rb:7:in `visit' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/tree/root_node.rb:20:in `render' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/engine.rb:315:in `_render' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sass-3.2.19/lib/sass/engine.rb:262:in `render' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/sass_compressor.rb:24:in `evaluate' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/context.rb:197:in `block in evaluate' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/context.rb:194:in `each' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/context.rb:194:in `evaluate' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/bundled_asset.rb:25:in `initialize' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/base.rb:377:in `new' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/base.rb:377:in `build_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/index.rb:94:in `block in build_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/caching.rb:58:in `cache_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/index.rb:93:in `build_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/base.rb:287:in `find_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/index.rb:61:in `find_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:211:in `block in find_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:257:in `benchmark' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:210:in `find_asset' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:119:in `block in compile' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:118:in `each' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:118:in `compile' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.1.4/lib/sprockets/rails/task.rb:70:in `block (3 levels) in define' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/rake/sprocketstask.rb:146:in `with_logger' 
    /tmp/build_0e049181-beb7-4525-b60f-4ff175a73837/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.1.4/lib/sprockets/rails/task.rb:69:in `block (2 levels) in define' 
    Tasks: TOP => assets:precompile 
    (See full trace by running task with --trace) 
! 
!  Precompiling assets failed. 
! 

!  Push rejected, failed to compile Ruby app 

To git@heroku.com:metrobox.git 
! [remote rejected] master -> master (pre-receive hook declined) 
error: failed to push some refs to 'git@heroku.com:metrobox.git' 

你能帮我吗？！

Answer 1

的错误是在这里：

.btnSmall span{ 
#.... 
-moz-box-shadow: inset 0 2px 2px -2px 
     rgba(255,255,255,255,.75), 
     inset 0 0 0 #fff; 
} 

还有就是255一个太多。在你的代码中出现了3次。只需搜索rgba(255,255,255,255,.75)即可找到它们。