三栏布局
浮动布局
- <section class="layout float">
-   <style media="screen">
-     .layout.float .left {
-       float: left;
-       width: 300px;
-       background: red;
-     }
-     .layout.float .center {
-       background: yellow;
-     }
-     .layout.float .right {
-       float: right;
-       width: 300px;
-       background: blue;
-     }
-   </style>
-   <h1>三栏布局</h1>
-   <article class="left-right-center">
-     <div class="left"></div>
-     <div class="right"></div>
-     <div class="center">
-       <h2>浮动解决方案</h2>
-       1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
-       3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
-       5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
-     </div>
-   </article>
- </section>
绝对布局
- <section class="layout absolute">
-   <style>
-     .layout.absolute .left-center-right > div {
-       position: absolute;
-     }
-     .layout.absolute .left {
-       left: 0;
-       width: 300px;
-       background: red;
-     }
-     .layout.absolute .center {
-       left: 300px;
-       right: 300px;
-       background: yellow;
-     }
-     .layout.absolute .right {
-       right: 0;
-       width: 300px;
-       background: blue;
-     }
-   </style>
-   <h1>三栏布局</h1>
-   <article class="left-center-right">
-     <div class="left"></div>
-     <div class="center">
-       <h2>绝对定位解决方案</h2>
-       1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
-       3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
-       5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
-     </div>
-     <div class="right"></div>
-   </article>
- </section>
flexbox 布局
- <section class="layout flexbox">
-   <style>
-     .layout.flexbox {
-       margin-top: 110px;
-     }
-     .layout.flexbox .left-center-right {
-       display: flex;
-     }
-     .layout.flexbox .left {
-       width: 300px;
-       background: red;
-     }
-     .layout.flexbox .center {
-       flex: 1;
-       background: yellow;
-     }
-     .layout.flexbox .right {
-       width: 300px;
-       background: blue;
-     }
-   </style>
-   <h1>三栏布局</h1>
-   <article class="left-center-right">
-     <div class="left"></div>
-     <div class="center">
-       <h2>flexbox解决方案</h2>
-       1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
-       3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
-       5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
-     </div>
-     <div class="right"></div>
-   </article>
- </section>
表格布局
- <section class="layout table">
-   <style>
-     .layout.table .left-center-right {
-       width: 100%;
-       height: 100px;
-       display: table;
-     }
-     .layout.table .left-center-right > div {
-       display: table-cell;
-     }
-     .layout.table .left {
-       width: 300px;
-       background: red;
-     }
-     .layout.table .center {
-       background: yellow;
-     }
-     .layout.table .right {
-       width: 300px;
-       background: blue;
-     }
-   </style>
-   <h1>三栏布局</h1>
-   <article class="left-center-right">
-     <div class="left"></div>
-     <div class="center">
-       <h2>表格布局解决方案</h2>
-       1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
-       3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
-       5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
-     </div>
-     <div class="right"></div>
-   </article>
- </section>
网格布局
- <section class="layout grid">
-   <style>
-     .layout.grid .left-center-right {
-       width: 100%;
-       display: grid;
-       grid-template-rows: 100px;
-       grid-template-columns: 300px auto 300px;
-     }
-     .layout.grid .left-center-right > div {
-     }
-     .layout.grid .left {
-       width: 300px;
-       background: red;
-     }
-     .layout.grid .center {
-       background: yellow;
-     }
-     .layout.grid .right {
-       background: blue;
-     }
-   </style>
-   <h1>三栏布局</h1>
-   <article class="left-center-right">
-     <div class="left"></div>
-     <div class="center">
-       <h2>网格布局解决方案</h2>
-       1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
-       3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
-       5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
-     </div>
-     <div class="right"></div>
-   </article>
- </section>
未知宽高元素水平垂直居中
- <div class="father">
-   <div class="son"></div>
- </div>
- //第一种
- <style>
-   .father {
-     position: relative;
-     width: 500px;
-     height: 500px;
-     background-color: red;
-   }
-   .son {
-     position: absolute;
-     margin: auto;
-     top: 0;
-     left: 0;
-     bottom: 0;
-     right: 0;
-     width: 300px;
-     height: 300px;
-     background-color: blue;
-   }
- </style>
- //第二种
- <style>
-   .father {
-     position: relative;
-   }
-   .son {
-     margin: auto;
-     position: absolute;
-     top: 50%;
-     left: 50%;
-     transform: translate(-50%, -50%);
-   }
- </style>
- //第三种
- <style>
-   .father {
-     display: -webkit-flex;
-     align-items: center;
-     justify-content: center;
-   }
-   .son {
-     margin: auto;
-   }
- </style>
- //第四种,用表格布局
- <div class="pe">
-   <div class="he">
-     <div class="she"></div>
-   </div>
- </div>
- <style>
-   .pe {
-     display: table;
-     width: 50%;
-     height: 30%;
-     position: absolute;
-   }
-   .he {
-     display: table-cell;
-     vertical-align: middle;
-     text-align: center;
-   }
-   .she {
-     width: 50%;
-     height: 30%;
-     display: inline-block;
-   }
- </style>
- //第五种,行内块元素
- <div class="wrap">
-   <b class="vamp"></b>
-   <div class="test">行内块元素</div>
-   <div>
-     <style>
-       .vamp{
-         width:0;
-         height:100%;
-         vertical-align:middle;
-       }
-       .test{
-         background:"blue";
-         display:inline-block;
-       }
-     </style>
-   </div>
- </div>