导航下拉菜单边框问题

Question

我希望菜单的下拉部分有边框，并且抛出菜单的下拉部分。我也想摆脱显示在下拉菜单右侧的蓝色边框。

下图显示了我遇到的问题，我想：

这里是我的导航菜单代码：

<div style="text-align: left;"> 

<style> 


#homelink { 
background-image: url(http://i946.photobucket.com/albums/ad301/campbellmichelle41109/sims3_logo_ver931034_zpsmnyi2tcj.png); 
background-repeat: no-repeat; 

background-color: transparent; 
display: block; 
width: 126px; 
height: 140px; 
} 


#homelink { 
position: relative; 
padding: 0; 
margin: -97px; 
} 


#mbt-menu, #mbt-menu ul { 
margin: -15px; 
padding: 17px; 
list-style: none; 
} 

#mbt-menu ul { 
border-style: solid; 
border-color: #EBEBEB; 
} 
#mbt-menu { 
width: 100%; 
margin: 0px auto; 
javascript:void(0) 
background-image: url("http://i946.photobucket.com/albums/ad301/campbellmichelle41109/navbg1.1_zps86kuvvkj.png") repeat-x; 

-moz-border-radius: 6px; 
-webkit-border-radius: 6px; 
border-radius: 6px; 
} 

#mbt-menu:before, 
#mbt-menu:after { 
content: ""; 
display: table; 
} 

#mbt-menu:after { 
clear: both; 

} 
#mbt-menu { 
zoom:1; 
} 
#mbt-menu li { 
float: left; 
border-right: 1px solid #328ad4; 
-moz-box-shadow: 1px 0 0 #469ee8; 
-webkit-box-shadow: 1px 0 0 #469ee8; 
box-shadow: 1px 0 0 #469ee8; 
position: relative; 
} 
#mbt-menu a { 
float: left; 
padding: 10px 25px; 
color: #ffffff; 
text-transform: uppercase; 
font: bold 12px Arial, Helvetica; 
text-decoration: none; 
text-shadow: 0 1px 0 #000; 
} 

#mbt-menu li ul a{ 
color: #000000; 
} 

#mbt-menu li ul a{ 
color: #000000; 
} 

#mbt-menu li ul a:hover{ 
color: #057BBA; 
} 

#mbt-menu li:hover > a { 
color: #0; 
} 
*html #mbt-menu li a:hover { /* IE6 only */ 
color: #000000; 
} 
#mbt-menu ul li { 
border-style: solid; 
border-color: #EBEBEB; 
} 


#mbt-menu ul { 
margin: 20px 0 0 0; 
_margin: 0; /*IE6 only*/ 
opaciaty: 0; 
visibility: hidden; 
position: absolute; 
top: 46px; 
left: 0; 
z-index: 9999; 
background: #ffffff; 

-moz-border-radius: 3px; 
-webkit-border-radius: 3px; 
border-radius: 3px; 
-webkit-transition: all .2s ease-in-out; 
-moz-transition: all .2s ease-in-out; 
-ms-transition: all .2s ease-in-out; 
-o-transition: all .2s ease-in-out; 
transition: all .2s ease-in-out; 
} 
#mbt-menu li:hover > ul { 
opacity: 1; 
visibility: visible; 
margin: 0; 
} 
#mbt-menu ul ul { 
top: 0; 
left: 150px; 
margin: 0 0 0 20px; 
_margin: 0; /*IE6 only*/ 


} 
#mbt-menu ul li { 

float: none; 
display: block; 
border: 0; 
_line-height: 0; /*IE6 only*/ 
border: 1px solid #EBEBEB; 
} 
#mbt-menu ul li:last-child { 
-moz-box-shadow: none; 
-webkit-box-shadow: none; 
box-shadow: none; 
} 
#mbt-menu ul a { 
padding: 7px; 
width: 130px; 
_height: 9px; /*IE6 only*/ 
display: block; 
white-space: nowrap; 
float: none; 
text-transform: none; 
} 


#mbt-menu ul a{ 
font-size: 12px; 
} 

#mbt-menu ul a:hover { 
background-color: #ffffff; 
} 
#mbt-menu ul li:first-child > a { 
-moz-border-radius: 3px 3px 0 0; 
-webkit-border-radius: 3px 3px 0 0; 
border-radius: 3px 3px 0 0; 
} 
#mbt-menu ul li:first-child > a:after { 
content: ''; 
position: absolute; 
left: 40px; 
top: -6px; 
border-left: 6px solid transparent; 
border-right: 6px solid transparent; 
border-bottom: 6px solid #469ee8; 
} 
#mbt-menu ul ul li:first-child a:after { 
left: -6px; 
top: 50%; 
margin-top: -6px; 
border-left: 0; 
border-bottom: 6px solid transparent; 
border-top: 6px solid transparent; 
border-right: 6px solid #3b3b3b; 
} 
#mbt-menu ul li:first-child a:hover:after { 
border-bottom-color: #04acec; 
} 
#mbt-menu ul ul li:first-child a:hover:after { 
border-right-color: #0299d3; 
border-bottom-color: transparent; 
} 
#mbt-menu ul li:last-child > a { 
-moz-border-radius: 0 0 3px 3px; 
-webkit-border-radius: 0 0 3px 3px; 
border-radius: 0 0 3px 3px; 
} 

</style> 

<div align=center> 

<ul id="mbt-menu"> 
<li><a id=homelink href="http://sims3addictresource.blogspot.com/"></a></li> 



<li> 
<a href="#">Simology</a> 
<ul> 
<li><a href="http://sims3addictresource.blogspot.com/p/needs.html">Needs</a></li> 
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<li><a href="http://sims3addictresource.blogspot.com/p/moodlets.html">Moodlets</a></li> 
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<li><a href="http://sims3addictresource.blogspot.com/p/ghosts.html">Ghosts</a></li> 
</ul> 
</li> 


<li> 
<a href="#">Expansion Guide</a> 
<ul> 
<li><a href="#">Ambitions</a></li> 
<li><a href="#">Generations</a></li> 
<li><a href="#">Pets</a></li> 
<li><a href="#">Late Night</a></li> 
<li><a href="#">Supernatural</a></li> 
<li><a href="#">World Adventures</a></li> 
<li><a href="#">University Life</a></li> 
</ul> 
</li> 


<li> 
<a href="#">Towns</a> 
<ul> 
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</ul> 
</li> 

<li> 
<a href="#">Free Downloads</a> 


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</ul> 

</div> 
</div> 

Answer 1

为了摆脱小蓝三角的，去掉这条规则：

#mbt-menu ul li:first-child > a:after { 
    content: ''; 
    position: absolute; 
    left: 40px; 
    top: -6px; 
    border-left: 6px solid transparent; 
    border-right: 6px solid transparent; 
    border-bottom: 6px solid #469ee8; 
} 

要除去周围的下拉菜单的背景中，添加下列规则：

#mbt-menu ul { 
    border: none !important; 
    padding: 0 !important; 
} 

要删除的蓝色边框（实际上是一个盒子的阴影），删除这些规则：

#mbt-menu li { 
    float: left; 
    border-right: 1px solid #328ad4; 
    -moz-box-shadow: 1px 0 0 #469ee8; /* DELETE */ 
    -webkit-box-shadow: 1px 0 0 #469ee8; /* DELETE */ 
    box-shadow: 1px 0 0 #469ee8; /* DELETE */ 
    position: relative; 

要调整下拉菜单的定位，所以它与父链接很好地对齐，在此处调整left和top属性：

#mbt-menu ul { 
    margin: 20px 0 0 0; 
    _margin: 0; 
    opaciaty: 0; 
    visibility: hidden; 
    position: absolute; 
    top: 46px; /* ADJUST DROP DOWN */ 
    left: 0; /* ADJUST DROP DOWN */ 
    z-index: 9999; 
    background: #ffffff; 
    -moz-border-radius: 3px; 
    -webkit-border-radius: 3px; 
    border-radius: 3px; 
    -webkit-transition: all .2s ease-in-out; 
    -moz-transition: all .2s ease-in-out; 
    -ms-transition: all .2s ease-in-out; 
    -o-transition: all .2s ease-in-out; 
    transition: all .2s ease-in-out; 
} 

Answer 2

基本上只是想是这样的：

#mbt-menu ul {border:none; padding: 0;} 

#mbt-menu li li {box-shadow: none; border-width: 2px 2px 0 2px;} 

#mbt-menu li li:last-child {border-bottom-width: 2px;} 

虽然我不会像这样添加样式。这仅用于演示目的。您可能需要使这些样式更具体，以便覆盖已有的样式。 （我刚刚通过CSS终端进行了测试。）理想情况下，将这些样式集成到您所属的现有代码中。

您对父ul/li有影响sub ul/li的样式，所以理想情况下使用类似于子选择器（>）的方式将这些规则更改为仅针对最高级别的样式。