overflow妙用--去除默认滚动条，内容仍可滚动

<div id="parent">
            <div id="child">
                <h1>文本区</h1>
                <h1>文本区</h1>
                <h1>文本区</h1>
            </div> 
        </div>

#parent {
        width: 100px;
        height: 100px;
        border: 1px solid green;
        overflow: hidden;
    }
    #child {
        width: 150px;
        height: 100px;
        overflow-x: hidden;
    }