常用布局@mixin_html/css_WEB-ITnose

单个块级元素的居中

@mixin center-block() {  display: block;  margin-left: auto;  margin-right: auto;}

多个块级元素占一行

用 display: inline-block 来实现

@mixin row($parent-selector, $item-selector, $font-size: 12px, $vertical-align: top) {  #{$parent-selector} {    font-size: 0;// 防止子元素的空白元素占据空间  }  #{$item-selector} {    display: inline-block;    vertical-align: $vertical-align;// 防止子元素高度不同导致的奇怪的对齐    font-size: $font-size;  }}

用 flex 来实现

@mixin row() {  display: flex;}

多个块级元素的居中

用 display: inline-block 来实现

@mixin center-blocks($parent-selector, $item-selector, $font-size: 12px, $vertical-align: top) {  @include row($parent-selector, $item-selector, $font-size: 12px, $vertical-align: top);  #{$parent-selector} {    text-align: center;  }}

用 flex 来实现

@mixin center-blocks($parent-selector) {  #{$parent-selector} {    @include row;    justify-content: center;  }}

两端对齐

用 display: inline-block 来实现

@mixin justify-blocks($parent-selector, $item-selector, $font-size: 12px, $vertical-align: top) {  @include row($parent-selector, $item-selector, $font-size: 12px, $vertical-align: top);  #{$parent-selector} {    text-align: justify;    &:after {      content: '';      display: inline-block;      width: 100%;    }  }}

用 flex 来实现

@mixin justify-blocks($parent-selector) {  #{$parent-selector} {    @include row;    justify-content: space-between;  }}

多个块级元素占一行，某个元素占据剩余部分

用 display: table 来实现

@mixin item-fill($parent-selector, $item-selector, $fill-item-selector, $vertical-align: top) {  #{$parent-selector} {    display: table; // 兼容性相当好。IE8+ 都支持 http://caniuse.com/#feat=css-table  }  #{$item-selector} {    display: table-cell; // 兼容性相当好。IE8+ 都支持 http://caniuse.com/#feat=css-table    vertical-align: $vertical-align;  }  #{$fill-item-selector} {    width: 100%;  }}

用 flex 来实现

@mixin item-fill($parent-selector,  $fill-item-selector) {  #{$parent-selector} {    @include row;  }  #{$fill-item-selector} {    -webkit-flex-grow: 1;    flex-grow: 1;  }}

完整源码

• _layout.scss
• flex 实现

参考链接

• Almost complete guide to flexbox (without flexbox)
• Flex 布局教程：语法篇

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