@media (max-width:760px){
  .portalSidebar .portalBack{
    display:flex!important;
    position:fixed;
    left:12px;
    bottom:calc(14px + env(safe-area-inset-bottom));
    z-index:9999;
    align-items:center;
    justify-content:center;
    gap:7px;
    min-width:92px;
    min-height:44px;
    margin:0;
    padding:10px 14px;
    border:1px solid #d7e1da;
    border-radius:999px;
    background:#173d2b;
    color:#fff;
    box-shadow:0 8px 24px rgba(15,48,31,.22);
    font-size:13px;
    font-weight:800;
  }
}