* {
    margin: 0;
    padding: 0;
}
.check {
    width: 375px;
    height: 250px;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-image: url(/assets/image/img/gb.webp);
}

.check-content {
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid #fff;
    position: absolute;
    top: 100px;
    left: 280px;
}


.check-block {
    width: 50px;
    height: 50px;
    border: 1px solid #fff;
    /* 直接继承父级 */
    background-image: inherit;
    background-repeat: inherit;
    /* 图片的大小*/
    background-size: 400px 300px;
    /* 设置为校验区域的坐标位置 check-content的left和top */
    background-position: -280px -100px;
    position: absolute;
    top: 100px;
    left: 10px;
}

.drag {
    width: 375px;
    height: 50px;
    background-color: #e3e3e3;
    margin-top: 10px;
    position: relative;
}

.drag-block {
    width: 50px;
    height: 50px;
    background-color: yellowgreen;
    z-index: 10;
    position: absolute;
    top: 0;
    left: 0;
}

.drag-tips {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    text-align: center;
    line-height: 50px;
    font-size: 12px;
    color: #8a8a8a;
}