样式：

.row {
    display: flex;
    padding-bottom: 10px;
}
.row-label {
    display: inline-block;
    width: 80px; /*label固定宽度*/
    text-align: right;
    padding-right: 10px;
    color:'#333';
}
.row-content {
    display: inline-block;
    text-align: left;
    flex: 1; /*修饰控件，自适应宽度*/
}

例子：

<div class="row">
    <div class="row-label">姓名：</div>
    <div class="row-content">控件</div>
</div>