  .hamburger {
        display: block;
      }

      .nav-h {
        height: 78px;
        width: 90vw;
        margin: auto;
      }

      .vis-h {
        opacity: 0;
      }

      .logo img {
        position: relative;
        top: 17px;
        left: 350px;
      }
    }

    @media only screen and (max-width:990px) {
      .header {
        height: 9rem;
      }

      .logo img {
        top: -9px;
        left: 50px;
      }
    }

    @media only screen and (max-width: 550px) {
      .about-us-