伸缩布局

 .flexcontainer{ display: -webkit-flex; display: flex; }//创建Flex容器

  .flexcontainer{ display: -webkit-flex; display: flex; -webkit-flex-    direction: column; flex-direction: column; }//Flex列显示

.flexcontainer{ -webkit-flex-direction: column; flex-direction: column; -webkit-justify-content: flex-start; justify-content: flex-start; }//水平方向Flex移动到顶部

.flexcontainer{ display: -webkit-flex; display: flex; -webkit-flex-direction: row; flex-direction: row; -webkit-align-items: flex-start; align-items: flex-start; }//垂直方向Flex移动到顶部

.flexcontainer{ display: -webkit-flex; display: flex; -webkit-flex-direction: row; flex-direction: row; -webkit-justify-content: flex-end; justify-content: flex-end; }//Flex水平移动到右边

.flexcontainer{ display: -webkit-flex; display: flex; -webkit-flex-direction: column; flex-direction: column; -webkit-align-items: flex-end; align-items: flex-end; }//Flex垂直移动到右边

.flexcontainer{ display: -webkit-flex; display: flex; -webkit-flex-direction: row; flex-direction: row; -webkit-align-items: center; align-items: center; -webkit-justify-content: center; justify-content: center; }//Flex水平移动到中间

.flexcontainer{ display: -webkit-flex; display: flex; -webkit-flex-direction: column; flex-direction: column; -webkit-align-items: center; align-items: center; -webkit-justify-content: center; justify-content: center; }//Flex垂直移动到中间

.bigitem{ -webkit-flex:200; flex:200; }  .smallitem{ -webkit-flex:100; flex:100; }//自动伸缩