.ad{
    z-index: 999;
    position: fixed;
    top: 50%;
    left: 50%;
    width: 60vw;
    height: 40vw;
    margin-top: -20vw;
    margin-left: -30vw;
    background-color: white;
}
.ad .close{
    position: absolute;
    top: -20px;
    right: -20px;
    width: 30px;
    height: 30px;
    opacity: 1;
    background-color: #e4393c;
    user-select: none;
    border-radius: 15px;
    background-image: url("/assets/img/close.png");
    background-size: 100% 100%;
    cursor: pointer;
}
.ad .content{
    display: block;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.ad .content img{
    width: 100%;
    min-height: 100%;
}