<div class="box"></div>
先来一个包含小块的盒子
.box{
//设置盒子属性
display: box;
display: -webkit-box;
display: -moz-box;
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
//内含块的排列方式
justify-content:space-between;
-webkit-justify-content: space-between;
-moz-justify-content: space-between;
-ms-justify-content: space-between;
-o-justify-content: space-between;
justify-content: space-between;
//内含块换行
flex-wrap:wrap;
}