header {
        position: absolute;
        }   .logo img {
      height: 80px;
  filter: brightness(0) invert(1);
      }
      
           nav ul li a {
        color: #fff;
                  border-bottom:1px solid transparent !important;

      }
      
      footer{
          /*display: none;*/
          margin-top:45px;
      }
      
  
      nav .active {
   
        font-weight:bold !important;
 border-bottom:1px solid #fff !important;
      }