console 命令行工具 X clear

console

<div class="tab1">
    <div class="tab2"></div>
</div>

.tab1 {
    width: 100%;
    height: 100px;
    background-color: #f00;
}

.tab2 {
    width: 100%;
    height: 100px;
    background-color: #fff;
        overflow-x: scroll;
}