.loading-an{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgb(187,201,164);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loading-an .rice {
    z-index: 10;
    height: 200px;
    width: 200px;
    background: url("https://static.igem.wiki/teams/4286/wiki/szu-loading-bar.gif") no-repeat;
}