css-iview官网布局

     100%;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    background-color: #fff;
    background-image: url(https://file.iviewui.com/dist/dc1e877….jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50%;
    overflow: hidden;

图片大小不缩放。