实例详解Html5的背景应用
作者: default|标签:html5 背景|2018-4-8 10:09
这篇文章主要介绍了浅谈Html5的背景属性,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

1、背景属性复习:
background-image
background-color
background-repeat
background-position
background-attachment

2、新增属性:
background-size:
background-size:x y; // 水平 垂直方向的尺寸,像素/百分比/auto/⋯
background-size:cover; //保持宽高比不变,保证占满盒子,但不保证能看到全部
background-size:contain; //保持宽高比不变,保证看清全图,但可能占不满盒子

多背景:
background-image:url(1.jpg),url(2.jpg);


background-origin 背景区域定位
border-box: 从border区域开始显示背景
padding-box: 从padding区域开始显示背景
content-box: 从content内容区域开始显示背景

background-clip 背景绘制区域
border-box: 从border区域开始绘制背景
padding-box: 从padding区域开始绘制背景
content-box: 从content内容区域开始显示背景

3、背景练习代码部分:

<!DOCTYPE HTML>
<html>
  <head>
    <title>your title name</title>
    <meta charset="utf-8">
    <meta name="Author" content="Wilson Xu">
    <style type="text/css">
      *{margin: 0;padding: 0;font-family: "Microsoft yahei";}
      a{text-decoration: none;}
      a img{display: block;border: none;}
      li{list-style: none;}

      .container{
        width: 1200px;
        padding: 20px;
        margin: 10px auto;
        border: 1px dashed #ccc;
      }
      .container h4{padding-bottom: 5px;}
      .container ul{
        width: 1200px;
        overflow: hidden;
      }
      .container ul li{
        float: left;
        width: 331px;
        padding: 20px;
        height: 240px;
        margin-right: 10px;
        border: 10px solid rgba(10,10,10,.3);
        background: url('images/1.jpg') no-repeat;
        background-size: 371px auto;
      }
      .container ul li:last-child{margin-right: 0;}

      .container ul.origin li:nth-child(1){
        background-origin: border-box;
      }
      .container ul.origin li:nth-child(2){
        background-origin: padding-box;
      }
      .container ul.origin li:nth-child(3){
        background-origin: content-box;
      }

      .container ul.clip li:nth-child(1){
        background-clip: border-box;
      }
      .container ul.clip li:nth-child(2){
        background-clip: padding-box;
      }
      .container ul.clip li:nth-child(3){
        background-clip: content-box;
      }

      section .pic{
        width: 600px;
        height: 400px;
        margin: 20px auto;
        border: 1px dashed #ddd;
        background: url('images/3.jpg') no-repeat center center/auto 200px, url('images/2.jpg') no-repeat center center/auto 300px, url('images/1.jpg') no-repeat center center/auto 400px;
      }
      section p{
        font-size: 14px;
        color: #f01010;
      }
    </style>
  </head>
  <body>
    <p class="container">
      <section>
        <h4>1、background-origin: border-box | padding-box | content-box</h4>
        <ul class="origin">
          <li></li>
          <li></li>
          <li></li>
        </ul>
      </section>
      <section>
        <h4 style="margin-top: 20px;border-top: 1px dashed #ccc;">2、background-clip: border-box | padding-box | content-box</h4>
        <ul class="clip">
          <li></li>
          <li></li>
          <li></li>
        </ul>
      </section>
      <section>
        <h4 style="margin-top: 20px;border-top: 1px dashed #ccc;">3、多背景:background: url('images/3.jpg') no-repeat center center/auto 200px, url('images/2.jpg') no-repeat center center/auto 300px, url('images/1.jpg') no-repeat center center/auto 400px;
</h4>
        <p class="pic"></p>
        <p>注释:复合写background-size的时候,一定要用/与其他值隔开。</p>
      </section>
    </p>
  </body>
</html>

5、背景练习preview:



6、渐变:

线性渐变:linear-gradient(方位(left/left top/60deg),起始颜色 | 百分比30%,终止颜色);使用时加内核前缀eg:-webkit-linear-gradient,IE9不支持
径向渐变:radial-gradient(中心点位置,扩散程度,颜色域 | 百分比);由中心向四周发散,eg:-webkit-radial-gradient(50px 50px,起始颜色,终止颜色);-webkit-radial-gradient(center,起始颜色,终止颜色);
IE低版本兼容:filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff',endColorstr='#ff0000',GradientType='1');1表示从左到右,0是从上到下,并且颜色值只能是6位哈希值

7、渐变练习代码部分:

<!DOCTYPE HTML>
<html>
  <head>
    <title>your title name</title>
    <meta charset="utf-8">
    <meta name="Author" content="Wilson Xu">
    <style type="text/css">
      *{margin: 0;padding: 0;font-family: "Microsoft yahei";}
      a{text-decoration: none;}
      a img{display: block;border: none;}
      li{list-style: none;}

      .container{
        width: 1200px;
        padding: 20px;
        margin: 20px auto;
        border: 1px dashed #ccc;
      }
      .container h4{padding-bottom: 5px;}
      .container ul{
        width: 1200px;
        overflow: hidden;
      }
      .container ul.linear li,
      .container ul.filter li{
        width: 600px;
        height: 40px;
        margin: 10px 0;
      }
      .container ul.linear li:first-child{
        background: -webkit-linear-gradient(60deg,#fff 10%, #f00 30%, #0f0 50%, #00f 70%, #000);
      }
      .container ul.linear li:last-child{
        background: -webkit-linear-gradient(left top, rgba(122,156,233,.6) 30%, rgb(255,12,222) 60%, green 80%, #fff);
      }
      .container ul.filter li:first-child{
        background: filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#abcdef',endColorstr='#f44add',GradientType='0');
      }
      .container ul.filter li:last-child{
        background: filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff',endColorstr='#000000',GradientType='1');
      }

      .container ul.radial li{
        width: 200px;
        height: 200px;
        margin-right: 20px;
        float: left;
        border-radius: 100%;
      }
      .container ul.radial li:nth-child(1){
        background: -webkit-radial-gradient(center, #fff, #000);
      }
      .container ul.radial li:nth-child(2){
        background: -webkit-radial-gradient(left 50px, #fff, #000);
      }
      .container ul.radial li:nth-child(3){
        background: -webkit-radial-gradient(50px 100px,100px 100px, #fff 80%, #000);
      }
      .container ul.radial li:nth-child(4){
        background: -webkit-radial-gradient(left, #fff 20%, #f00 40%, #0f0 60%, #00f 80%, #000);
      }
    </style>
  </head>
  <body>
    <p class="container">
      <section>
        <h4>1、线性渐变:-webkit-linear-gradient(方位,颜色域 | 范围百分比)</h4>
        <ul class="linear">
          <li></li>
          <li></li>
        </ul>
      </section>
      <section>
        <h4>2、线性渐变-兼容IE低版本:filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='6位哈希值',endColorstr='6位哈希值',GradientType='1/0');</h4>
        <ul class="filter">
          <li></li>
          <li></li>
        </ul>
      </section>
      <section>
        <h4>3、径向渐变:radial-gradient(中心点位置,扩散程度,颜色域 | 百分比);</h4>
        <ul class="radial">
          <li></li>
          <li></li>
          <li></li>
          <li></li>
        </ul>
      </section>
    </p>
  </body>
</html>

8、渐变preview:

以上就是实例详解Html5的背景应用的详细内容,更多请关注php中文网其它相关文章!

12
点赞
收藏
分享:
0/300