flex组合流动布局实例---利用css的order属性改变盒子排列顺序
flex弹性盒子
<div class="container"> <div class="box yellow"></div> <div class="container" id="container2"> <div class="box blue"></div> <div class="box green"></div> </div> <div class="box red"></div> </div>
css
.container{
width:100%;
display:flex;
flex-wrap:wrap;
}
.box{
width:100%;
}
@media only sccreen and (min-width:500px){
.dark_blue{width:50%;}
#container2{width:50%}
}
/*利用order来控制div块的顺序,默认为0,小于0在前,大于0在后*/
@media only sccreen and (min-width:600px){
.dark_blue{width:25%;order:1;}
#container2{width:50%}
.red{width:25%;order:-1;}
}

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