.close-3d {          position: absolute;          top: 10px;          left: 50%;          transform: translateX(-50%);          font-size: 19px;          cursor: pointer;          color: rgb(255, 255, 255);      }      .loader-3d { position: absolute; top: 50%; left: 50%; transform: translateX(-50%) translateY(-50%); }      @media (max-width: 768px) {          .close-3d { top: 10px; }      }