#promoIcons {
    z-index: 1000;
    position: absolute;
    top: 0;
    margin-top: 60%;
    margin-left: 4%;
    display: none;
    margin-right: 4%;
    background-color: #3530308c;
    border-radius: 15px;
    border: 1px solid #000;
}

.crosspromo {
    /* width: 20vw;
  height: 20vw; */
    margin: 1vw;
}

.crosspromo_img_shu {
    width: 20vw;
    height: 20vw;
}

.crosspromo_img_heng {
    width: 10vw;
    height: 10vw;
}

.scale-up-center {
    border-radius: 10px;
    border: 2px solid black;
    -webkit-animation: scale-up-center 0.5s cubic-bezier(0.390, 0.575, 0.565, 1.000) 0.5s infinite alternate both;
    animation: scale-up-center 0.5s cubic-bezier(0.390, 0.575, 0.565, 1.000) 0.5s infinite alternate both;
}

@keyframes scale-up-center {
    0% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}