console 命令行工具 X clear

console

<div class="father">
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
</div>

.father{
    display: flex;
    flex-wrap: wrap;
}
.item{
    background: rgba(255,0,0,0.4);
    height: 100px;
    flex:0 20%;
    margin: 10px 15px;
}