.l__footer {
    background: #484c4e;
    width: 100%;
    margin: 0 auto;
    padding: 0;
    height: 0;
    position: relative;
    z-index: 10
}

.page-top {
    height: 48px;
    position: absolute;
    top: 12px;
    right: 0;
    text-align: center;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    z-index: 100
}

.page-top__btn {
    content: "";
    display: block;
    width: 48px;
    height: auto;
    aspect-ratio: 1/1;
    display: block;
    background: url(../../images/btn_top.png) no-repeat left top / 100% auto;
    position: fixed;
    bottom: 2rem;
    right: -48px;
    opacity: 0;
    cursor: pointer;
    transition: opacity .2s;
}

.page-top__btn:hover {
    opacity: 1!important;
}

@media screen and (max-width: 767px) {
  .page-top__btn {
    width: 42px;
    background-image: url(../../images/btn_top_s.png);
    aspect-ratio: 88/80;
    bottom: 3rem;
  }
}

.page-top__btn--absolute {
    position: absolute;
    bottom: 0;
    right: 3vw;
    opacity: 1
}