javascript - 导入 Bootstrap 样式表时图像消失

Question

我的网站上有一个页面，当我将鼠标悬停在其中一张图片上时，会出现一个带有图片说明的叠加层。以下是其中一张图片的代码:

<div id="content">
            <div class="mosaic-block fade">
                <a target ="_blank" href = "files/file1.pdf" class="mosaic-overlay">
                    <div class="details">
                        <h4>Form #1</h4>
                        <p>Permission Slip</p>
                        </div>
                </a>
                <div class="mosaic-backdrop"><img src="img/thumb1.jpg"/></div>
            </div>

通过在我的标题中链接这些样式表/脚本，图像和叠加层可以工作

    <link rel="stylesheet" href="css/mosaic.css" type="text/css" media="screen" />
    <link rel="stylesheet" href="../events/eventInfoStyle.css" type="text/css" media="screen" />
    <link rel="stylesheet" type="text/css" href="../events/headbar.css">

    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js"></script>
    <script type="text/javascript" src="../events/header.js"></script>
    <script type="text/javascript" src="js/mosaic.1.0.1.js"></script>

但是当我添加 Bootstrap 时，图像不再出现。这是我要添加的 Bootstrap 。

<!-- Latest compiled and minified CSS -->
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

    <!-- jQuery library -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>

    <!-- Latest compiled JavaScript -->
    <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

添加 Bootstrap 后图像不显示的原因是什么？这是我的其余 CSS:

MAIN.CSS:

    .nav{
  background-color:white;

 }
.affix{
  top: 0;
  width: 100%;
  margin-bottom:10px;
}

.nav a {
  color: #5a5a5a;
  font-size: 11px;
  font-weight: bold;
  padding: 14px 10px;
  text-transform: uppercase;


}

.nav li {
  display: inline;

}

.jumbotron {
  margin-top:5px;

  height: 700px;
  background-repeat: no-repeat;
  background-size: cover;
  background-color: #56A0D3;
  background-image: url('wvlogo.png');

}

.jumbotron .container {
  position: relative;
  top:100px;
}

.jumbotron h1 {
  color: #fff;
  font-size: 48px;  
  font-family: 'Shift', sans-serif;
  font-weight: bold;
  text-align:center;


}

.jumbotron p {
  font-size: 20px;
  color: #fff;
}

.learn-more {
  background-color: #f7f7f7;

}

.learn-more h3 {
  font-family: 'Shift', sans-serif;
  font-size: 18px;
  font-weight: bold;
}

.learn-more a {
  color: #00b0ff;
}

.announcements{
    background-color:#efefef;
    border-bottom: 1px solid #dbdbdb;
}
.announcements h2{
    color:#393c3d;
    font-size:24px;
    }
.announcements p{
    font-size:15px;
    color:rgb(0, 32, 96);
    margin-bottom:13px;
    text-align:center;
    height:150px;
    padding:30px;
    border-radius:25px;
    background-color: #56A0D3;
}


.myStatsLogin{
  background-color:#56A0D3;
  border-style:solid;
  border-width:5px;
  border-radius:25px;
  width:300px;
  text-align:center;
  margin:auto;
  color: rgb(0,32,96);
  font-size: 16px;
  font-weight: bold;
  padding: 7px 5px;
  text-transform: uppercase;
}
.carousel-announcement{
  height:200px;
  color:rgb(0,32,96);
  font-size:32px;
  background-color:#56A0D3;
  text-align:center;
  padding-top:20px;  
  padding-left:100px;
  padding-right:100px;
}

.section-title h1{
  font-size:48px;
  margin:0px;
  text-align:center;
  text-decoration:underline;
  color: rgb(0,32,96);
  background-color:#56A0D3;
}
EVENTINFOSTYLE.CSS:
h1{



    color:#002060;
     font-size: 40px;
      font-weight: bold;
      padding: 7px 5px;
      text-transform: uppercase;
      background-color:#56A0D3;
      border-radius:25px;
      border:solid 3px rgb(0,32,96);
    margin:0;

    margin-top:1em;

}



form{

    width:50%;

    position:relative;

    display:inline-block;

}

body{

    background-color:#00007f;

     background: linear-gradient(#B4D8E7, #00005f);
     /*background-repeat:no-repeat;
     height:100%;*/

     text-align:center;

}

.sideImage{

    float:right;

    width:40%;

    display:inline-block;

}

img{

    position:relative;

    width:100%;

}

.announcment{

    margin: 0 auto;

    background-color: rgba(0,32,96,.85);
    border-radius:15px;

    padding: 2em;

    display: block;

    position: relative;

    text-align: left;

}

.announcment h1{

    color: white;

    font-family: "Calisto MT", "Bookman Old Style", Bookman, "Goudy Old Style", Garamond, "Hoefler Text", "Bitstream Charter", Georgia, serif;

    font-style: italic;

    font-size: 3em;

    text-shadow:2px 2px #000;

    margin-top: 0;

    text-align: center;

}

.announcment h2{

    color: white;

    font-family: Candara, Calibri, Segoe, "Segoe UI", Optima, Arial, sans-serif;

    font-size: x-large;

    text-shadow:2px 2px #000;

}

.announcment p{

    color: white;

    font-family: Candara, Calibri, Segoe, "Segoe UI", Optima, Arial, sans-serif;

    font-size: large;

    text-shadow:2px 2px #000;

}



.announcment li{

    color: white;

    font-family: Candara, Calibri, Segoe, "Segoe UI", Optima, Arial, sans-serif;

    font-size: large;

    text-shadow:2px 2px #000;

}

.announcmentWrapper{

    margin: 0 auto;

    margin-bottom:2em;

    margin-top:2em;

    padding: 1em;

    width: 70%;

    background-color: #56A0D3;
    border-radius:25px ;

    position: relative;

    display: inline-block;

}



hr.experiencehr {

    border: 0;

    height: 1px;

    background: #3498db;

    background-image: -webkit-linear-gradient(left, rgba(0,50,96,.85), #3498db, rgba(0,50,96,.85)); 

    background-image:    -moz-linear-gradient(left, rgba(0,50,96,.85), #3498db, rgba(0,50,96,.85)); 

    background-image:     -ms-linear-gradient(left, rgba(0,50,96,.85), #3498db, rgba(0,50,96,.85)); 

    background-image:      -o-linear-gradient(left, rgba(0,50,96,.85), #3498db, rgba(0,50,96,.85)); 

}

li{

    line-height: 0em;

}

a:link{

    color:#eee;

}

a:visited{

    color:#ccc;

}

HEADBAR.CSS:
.signup{

    position:relative;

    border-left:1px solid black;

    color:white;

    float:right;

    padding: 0.5em;

    margin:0.2em;

    font-family: Candara, Calibri, Segoe, "Segoe UI", Optima, Arial, sans-serif;

    cursor:pointer;

    z-index:100;

}

.headbar{

    position:fixed;

    background:-o-linear-gradient(bottom, #005fbf 5%, #003f7f 100%);    background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #005fbf), color-stop(1, #003f7f) );

    background:-moz-linear-gradient( center top, #005fbf 5%, #003f7f 100% );

    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#005fbf", endColorstr="#003f7f");  background: -o-linear-gradient(top,#005fbf,003f7f);

    width:100%;

    z-index:9999;

    overflow:hidden;

    height:2.5em;

}

body{

    margin:0;

}

Answer 1

您的.fade 类也是一个 Bootstrap 类。将其重命名为 my-fade 并查看是否可以。