如何在图像上叠加徽标？用css

时间：2017-01-16 22:38:37

标签： html css

正如您所看到的，徽标显示在背景图像上方，但我希望它位于背景图像的中心。

这是我的标题，背景需要从页面顶部开始，在菜单之前结束。徽标需要显示在背景图像的中央。 我已经尝试了很多，但也许有人有类似的问题，可以帮助我。

enter image description here

这张图片显示它几乎可以工作，但它背后的背景

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<html>
<head>
    
    <meta charset="UTF-8">
  <link rel='stylesheet' href='//fonts.googleapis.com/css?family=font1|font2|etc' type='text/css'>
  <link rel="stylesheet" href="styles.css" type="text/css">
  <script src="navbar.js"></script>
   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
    <!--bootstrap--> 
  <link rel="stylesheet" type="text/css" href="styles/css/bootstrap.css">
  <script src="styles/js/bootstrap.min.js"></script>
   <!--datepicker -->
     <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <link rel="stylesheet" href="/resources/demos/style.css">
  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
  <script src="styles/js/bootstrap.min.js"></script>
  <script>
  $( function() {
    $( "#datepicker" ).datepicker();
  } );
  </script>  

</head>
<body>
<header>
  
  
  <div id="theCarousel" class="carousel slide" data-ride="carousel">
        <img class="logo" src="fts.png">
  
      <ol class="carousel-indicators">
          <li data-target="#theCarousel" data-slide-to="0" class="active">
              
          </li>
          <li data-target="#theCarousel" data-slide-to="1">
              
          </li>
          <li data-target="#theCarousel" data-slide-to="2">
              
          </li>          
      </ol>
      <div class="carousel-inner">
          <div class="item active">
              <div class="slide1">
                  <div class="carousel-caption">
                  </div>
          </div>
      </div>
 <div class="item">
              <div class="slide2">
                  <div class="carousel-caption">
                  </div>
          </div>
      </div>   
 <div class="item">
              <div class="slide3">
                  <div class="carousel-caption">
                  </div>
          </div>
 </div></div>
          
          <a class="left carousel-control" href="#theCarousel"  data-slide="prev">
              <span class="glyphicon glyphicon-chevron-left"> </span></a>
          
          <a class="right carousel-control" href="#theCarousel"  data-slide="next">
              <span class="glyphicon glyphicon-chevron-right"> </span> </a>         
  </div>
</header>
<div id="cssmenu" class="align-right">
  <ul>
  <?php
    switch ($_SESSION['isAdmin']) { 
                case "1":
                echo '<li><a href="adminDash.php"><i class="fa fa-unlock"></i><span>AdminDash</span></a></li>' ;
                break;

                case "0":
                break;

                default:
                break;
            }

?>
     <li><a href="index.php"><span>DASHBOARD</span><i class="fa fa-home"></i></a></li>
     <li><a href="acties/nieuwTicketDash.php"><span><i class="fa fa-ticket"></i> NIEUW TICKET</span></a></li>
     <li><a href="tickets.php"><span>ALLE TICKETS</span></a></li>
     <li><a href="klanten.php"><span></i> KLANTEN</span></a></li>
     <li class="active"><a href="acties/uitloggen.php"><span><i class="fa fa-sign-out"></i>UITLOGGEN</span></a></li>
  </ul>
</div>
 <br><br><br>
</body>

<style>
body {
  background-color: #cdcdcd;
  width: 100%;
  margin: 0 auto;
   
}

img.logo {
  height: 130px;
  position: absolute;
  margin: auto;
  display: block;
  top: 80px;
  left: 0;
  right: 0;
}
header{
  width: 100%;
  position: relative;
  text-align: center;
}
		
		/* Carousel Styling */
.carousel div[class^=slide] {
  height: 100px;
  width: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  position: relative;
  z-index: -1
}

.slide1{
  background-image: url('styles/3.jpg');
}
.slide2{
  background-image: url('styles/2.jpg');
}
.slide3{
  background-image: url('styles/1.png');
}
</style>
  </html>
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1 个答案:

答案 0 :(得分：1)

使用position:relative/absolute

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img.logo {
  height: 90px;
  position: absolute;
  margin: auto;
  display: block;
  top: 80px;
  left: 0;
  right: 0;
}
header {
  width: 100%;
  position: relative;
  text-align: center;
}
/* Carousel Styling */

.carousel div[class^=slide] {
  height: 110px;
  width: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  position: relative;
  z-index: -1
}
.slide1 {
  background-image: url('//placehold.it/500');
}
.slide2 {
  background-image: url('styles/2.jpg');
}
.slide3 {
  background-image: url('styles/1.png');
}
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<header>


  <div id="theCarousel" class="carousel slide" data-ride="carousel">
    <img class="logo" src="//placehold.it/100/FF0">

    <ol class="carousel-indicators">
      <li data-target="#theCarousel" data-slide-to="0" class="active">

      </li>
      <li data-target="#theCarousel" data-slide-to="1">

      </li>
      <li data-target="#theCarousel" data-slide-to="2">

      </li>
    </ol>
    <div class="carousel-inner">
      <div class="item active">
        <div class="slide1">
          <div class="carousel-caption">
          </div>
        </div>
      </div>
      <div class="item">
        <div class="slide2">
          <div class="carousel-caption">
          </div>
        </div>
      </div>
      <div class="item">
        <div class="slide3">
          <div class="carousel-caption">
          </div>
        </div>
      </div>
    </div>

    <a class="left carousel-control" href="#theCarousel" data-slide="prev">
      <span class="glyphicon glyphicon-chevron-left"> </span>
    </a>

    <a class="right carousel-control" href="#theCarousel" data-slide="next">
      <span class="glyphicon glyphicon-chevron-right"> </span> 
    </a>
  </div>
</header>
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