@media (min-width: 320px) and (max-width: 767px) {
    .back-button-eduBtn {
        display: inline-block;
        background-color: #6B6562;
        width: 45px;
        height: 43px;
        text-align: center;
        position: fixed;
        bottom: 95px;
        right: 4px;
        transition: background-color .3s, opacity .5s, visibility .5s;
        opacity: 0;
        visibility: hidden;
        z-index: 9999;
    }
    .back-button-eduBtn.show {
        opacity: 1;
        visibility: visible;
    }
    .back-button-arrowImg {
        width: 23px;
        height: 22px;
        position: absolute;
        top: 10.6px;
        left: 10.6px;
    }
    .back-button-btnDisplay {
        display: block !important;
    }
}