.tow-textarea-content {
    display: flex;
}

.line-num-content {
    /*width: 15px;*/
    /*height: 100%;*/
    /*background: black;*/
    background: #eee;
}

.line-num-textarea-style {
    width: 15px;
    height: 100%;
    margin: 0 5px;
    padding: 10px 0 10px 0;
    border: none;
    resize: none;
    box-sizing: border-box;
    font-size: 14px;
    background: #eee;
    outline: none; /* 去除轮廓（焦点时的蓝色边框） */
    overflow-y: hidden; /* 隐藏垂直滚动条 */
    overflow-x: hidden; /* 隐藏垂直滚动条 */
}