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我在页面的响应方面遇到了一些困难。菜单栏会在768px之后消失
正如您在下面的代码中看到的，当我使用Google开发人员工具检查响应时，菜单栏将在宽度低于768px后消失？
但我想真有像的414px宽度手机较小的屏幕菜单栏...
/*these are classes, put in class declaration*/
<!--just for the About and data html sheets-->
.navbar,.navbar-collapse,.navbar-brand,.nav,#aboutlink,#print-link{
background: #332A85;
color: #ffffff;
text-align: right;
}
#menu a.active, #menu a:hover ,.nav>li>a:focus, .nav>li>a:hover{
transition-property: background-color, color;
transition-duration: .2s;
transition-timing-function: ease-out;
background-color: #332A85;
color: #fff;
}
#print-link {
pointer-events: none;
cursor: default;
}
.ccusa_container{
padding-top: 12em;
padding-left: 12em;
padding-right: 12em;
margin-bottom: 10px;
color: black;
font-size: 15px;
font-family: 'Open Sans';
text-align: justify;
background-color: white;
}
.jumbotron {
background-color: black;
border: 2px solid black;
text-align: center;
height: 450px;
color: white;
font-family: 'Open Sans', sans-serif;
padding-top: 12em;
padding-left: 12em;
padding-right: 12em;
margin-bottom: 10px;
}
/*-- # = ids -*/
html, body {
height: 0%;
margin: 0;
padding: 0;
font-family: 'Open Sans', sans-serif;
font-size: 0.9em;
background-color: white;
color: black;
}
h2, h3 {
font-size: 1.2em;
font-weight: 400;
font-family: 'Open Sans', sans-serif;
}
h4 {
font-family: 'Open Sans', sans-serif;
font-size: 1.5em;
margin-top: 1.5em;
margin-bottom: 0.5em;
}
p {
margin: 10px;
text-align: left;
}
a.header1 {
font-family: 'Open Sans', sans-serif;
font-size: 0.8em;
color: #fff;
}
a.body1{
color: purple;
}
hr {
display: block;
margin-top: 1.5em;
margin-bottom: 1.5em;
margin-left: auto;
margin-right: auto;
border-style: solid;
border-width: 2px;
}
.closeinfo {
padding-top: 8em;
padding-left: 8em;
padding-right: 8em;
margin-bottom: 10px;
font-family: 'Open Sans', sans-serif;
font-size: 0.9em;
background-color: black;
color: #fff;
text-align: center;
height: 300px;
}
table {
border-collapse: collapse;
width: 100%;
}
th, td, th {
padding: 8px;
text-align: left;
border: 1px solid black;
}
th {
text-align: left;
}
/*mobile responsivenes*/
@media (max-width: 550px) {
navbar-fixed-top {
width: 400px;
}
#menu {
width: 400px;
position: sticky;
}
h4 {
display: none;
}
.navbar, .navbar-fixed-top, .navbar-header {
width : 100%;
background: #332A85;
color: #332A85;
}
.mapboxgl-canvas-container {
align-content: center;
}
}<!DOCTYPE>
<html>
<head>
\t <meta charset = 'utf8'>
\t <title>Operations - About</title>
\t <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.4.1/d3.min.js"></script>
\t <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
\t <!-- Begin Mapbox requests -->
\t <script src='https://api.mapbox.com/mapbox-gl-js/v0.32.1/mapbox-gl.js'></script>
\t <link href='https://api.mapbox.com/mapbox-gl-js/v0.32.1/mapbox-gl.css' rel='stylesheet' />
\t <script src='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v2.1.0/mapbox-gl-geocoder.min.js'></script>
\t <link rel='stylesheet' href='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v2.1.0/mapbox-gl-geocoder.css' type='text/css' />
\t <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
\t <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
\t <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
\t <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,600' rel='stylesheet' type='text/css'>
\t <link href='https://fonts.googleapis.com/css?family=Fjalla+One|Exo:400,600|Ropa+Sans' rel='stylesheet' type='text/css'>
\t <link href="https://fonts.googleapis.com/css?family=Exo" rel="stylesheet">
\t <link href="https://fonts.googleapis.com/css?family=Alegreya+Sans+SC" rel="stylesheet">
\t <link href='https://fonts.googleapis.com/css?family=PT+Sans+Narrow|Arimo|Dosis|Lato' rel='stylesheet' type='text/css'>
\t <!-- Style Sheets -->
\t <link rel="stylesheet" type="text/css" href="css/style.css">
\t <link rel="stylesheet" type="text/css" href="css/reset.css">
\t <!-- end project-specific asset calls -->
</head>
<body>
\t <div>
\t \t <!--Navbar-->
\t \t <nav class="navbar navbar-fixed-top" role="navigation">
\t \t \t <div class="container-fluid">
\t \t \t \t <!-- Brand and toggle get grouped for better mobile display -->
\t \t \t \t <div class="navbar-header">
\t \t \t \t \t <div class="navbar-brand"><a href="index.html" class="header1"> Project Work</a></div>
\t \t \t \t </div>
\t \t \t \t <!-- Collect the nav links, forms, and other content for toggling -->
\t \t \t \t <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
\t \t \t \t \t <ul class="nav navbar-nav navbar-right">
\t \t \t \t \t \t <li class="nav"> <a href="index.html" class="header1">Map</a></li>
\t \t \t \t \t \t <li class="nav"> <a href="about.html" class="header1">About</a></li>
\t \t \t \t \t \t <li class="nav"> <a href="data.html" class="header1">Data</a></li>
\t \t \t \t \t </ul>
\t \t \t \t </div>
\t \t \t </nav>
\t \t </div>
\t \t <!----jumbotron---->
\t \t <div class="jumbotron">
\t \t \t <h3>vitae non volutpat mi nisl amet in sapien enim eget quam sodales nunc nulla ligula tortor integer pretium vitae sit purus ultricies nec vitae nec quam nunc mauris felis turpis blandit risus nunc felis ornare morbi non id cras per eros dignissim orci aenean elit libero sed morbi pellentesque a libero morbi curabitur in in at cum aliquam sed in libero nam mi amet tincidunt sit sit in eros arcu bibendum tortor eleifend vulputate nisl duis turpis erat tincidunt rhoncus sit sit nulla nascetur in in vulputate neque dignissim nisl mauris wisi ac elit esse per diam nam morbi eros auctor ut lacinia libero malesuada justo sed odio montes dolor duis in maecenas faucibus amet
\t \t \t </h3>
\t \t </div>
\t \t <!----TEXT---->
\t \t <div class="col-md-12 text-justify">
\t \t \t <div class="col-md-1 justify"></div>
\t \t \t <div class="col-md-10 justify" style="background-color:##C0C0C0">
\t \t \t </div>
\t \t \t <div class="col-md-1 justify"></div>
\t \t </div>
\t \t <!--Center buttons: GitHub MapBox ATTOM-->
\t \t <div class="col-md-12 text-center" style="background-color:##C0C0C0">
\t \t \t <div class="col-md-1 text-center"></div>
<!----TEXT---->
<div class="bio container-fluid" id="ccusa_container">
\t <!----TEXT---->
\t <div class="col-md-12 text-justify">
\t \t <div class="col-md-1 justify"></div>
\t \t <div class="col-md-10 justify">
\t \t \t <br><br>
\t \t \t </h3>
\t \t </div>
\t \t <div class="col-md-1 justify"></div>
\t </div>
\t <div class="col-md-12 text-center">
\t \t <div class="col-md-2 text-center"></div>
\t \t <div class="col-md-4 text-center">
\t \t \t <p align="center"><center><img src='./static/ccusa_logo.png' style="height: 100px"> </img></center>
\t \t \t \t <br>
\t \t \t \t <center align="center"><a href="https://twitter.com/CCharitiesUSA" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @CCharitiesUSA</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script></center>
\t \t \t \t <br>
\t \t \t \t </p>
\t \t \t </div>
\t \t \t <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script></center>
\t \t \t <br>
\t <br><br>
\t \t </div>
\t \t <div class="col-md-2 text-center"></div>
\t </div>
\t <br><br>
</div>
</body>
</html>的反应如何，我们感到我提高我的问题吗？
由于您使用引导程序，因此有一个默认的导航栏，当屏幕宽度很小时，导航栏会相应地改变。您需要更改所有与该菜单相关的@ media选择器（或者使用一些可以为您修复的模板）。 – Dekel