滑动门
大家在网页中常常访问到这样一种导航效果,由于利用频率广泛,以是广大的步伐员给它起了一个名字,叫做滑动门.在学习滑动门之前,起首你要相识什么是滑动门
具体实现
- <div class="slide">
- <ul>
- <li>
- <a href="#">手机</a>
- <span class="iconfont icon-jiantou_liebiaoxiangyou"></span>
- <div class="slide-list">小米1</div>
- </li>
- <li>
- <a href="#">电视</a>
- <span class="iconfont icon-jiantou_liebiaoxiangyou"></span>
- <div class="slide-list">小米2</div>
- </li>
- </ul>
- </div>
复制代码- *{
- margin: 0;
- padding: 0;
- }
- .slide {
- width: 234px;
- height: 420px;
- background-color: rgba(105, 101, 101, .6);
- padding: 20px 0;
- position: relative;
- margin: 100px;
- }
- .slide ul{
- list-style: none;
- }
- .slide ul li{
- width: 100%;
- height: 42px;
- line-height: 42px;
- text-align: left;
- padding-left: 30px;
- box-sizing: border-box;
- }
- .slide ul li:hover{
- background:#ff6700;
- }
- .slide ul li a{
- display: inline-block;
- text-decoration: none;
- color: #fff;
- }
- .slide-list {
- width: 992px;
- height: 460px;
- background-color: #fff;
- border: 1px solid #e0e0e0;
- border-left: none;
- box-shadow: 0 8px 16px rgba(0, 0, 0, .18);
- box-sizing: border-box;
- position: absolute;
- top: 0;
- left: 234px;
- display: none;
- }
- .slide li:hover>.slide-list {
- display: block;
- }
- .iconfont{
- display: inline-block;
- font-size: 24px;
- color: #fff;
- position: absolute;
- right: 10px;
- }
复制代码 粘性定位
具体实现
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <style>
- * {
- margin: 0;
- padding: 0;
- }
- .ad {
- width: 100%;
- background-color: #ff6524;
- }
- .ad img{
- display: block;
- width: 1190px;
- height: 100px;
- margin: 0 auto;
- }
- .wrap{
- width: 80%;
- margin: 0 auto;
- }
- .head {
- width: 100%;
- height: 50px;
- line-height: 50px;
- position: sticky;
- top: 0px;
- }
- .head ul {
- list-style: none;
- }
- .head ul li {
- float: left;
- padding: 0 10px;
- }
- h3 {
- height: 300px;
- }
- </style>
- </head>
- <body>
- <div class="container">
- <div class="ad">
- <img src="./ad.png" alt="">
- </div>
- <div class="wrap">
- <div class="head">
- <ul>
- <li>导航1</li>
- <li>导航2</li>
- <li>导航3</li>
- <li>导航4</li>
- </ul>
- </div>
- <div class="body">
- <h3>标题1</h3>
- <h3>标题2</h3>
- <h3>标题3</h3>
- <h3>标题4</h3>
- <h3>标题5</h3>
- <h3>标题6</h3>
- <h3>标题7</h3>
- </div>
- </div>
- </div>
- </body>
- </html>
复制代码 粘性定位为什么不生效?
- 父元素不能overflow:hidden或者overflow:auto属性
- 必须指定top、bottom、left、right4个值之一,否则只会处于相对定位
- 父元素的高度不能低于 sticky 的高度
- sticky元素仅在其父元素内生效
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