@media screen and (max-width: 768px) {
    a.closebtn span {
        top: 1;
        top: -12px;
        right: 10px;
        position: absolute;
        font-size: 43px;
    }
    .main-nav-ul {
        width: 0;
        position: fixed;
        z-index: 1;
        top: 0;
        left: 0;
        transition: 0.5s;
        overflow-x: hidden;
      }

    ul.top-nav-ul.float-right.top-nav-right li  {
        margin: 12px 6px;
    }
    ul.top-nav-ul.float-right.top-nav-right li a img {
        width: 32px;
    }
    ul.top-nav-ul li {
        margin: 12px 2px;

    }
    ul.main-nav-ul li {
        width: 100%;
    }
    .main-sub-menu {
        right: 0;
        border: none;
        display: block;
        position: static;
    }
    ul.main-nav-ul {
        overflow: scroll;
        max-height: 400px;
    }
  
  }

  @media only screen and (max-width: 360px) {
    ul.top-nav-ul.float-right.top-nav-right li  {
        margin: 12px 2px;
    }
    ul.top-nav-ul li a img {
        width: 22px;
    }
    ul.top-nav-ul.float-right.top-nav-right li a img {
        width: 28px;
    }

    @media only screen and (max-width: 320px) {
        ul.top-nav-ul li a img {
            width: 18px;
        }
        ul.top-nav-ul.float-right.top-nav-right li a img {
            width: 26px;
        }

  }