.borders::before{
    position: absolute;
    left: 0;
    top: 0;
    content: " ";
    width: 100%;
    height: 1px;
    border-top: 1px solid #ECECF0;
    -webkit-transform-origin: 0 0;
    transform-origin: 0 0;
    -webkit-transform: scaleY(0.5);
    transform: scaleY(0.5);/*缩放*/
}