USTMENU.css

      <style>

         ul {
     padding: 0;
     margin: 0;
     list-style-type:none;
     background-color: black;
         overflow:auto;
            }
      
      ul li {
         float:left;
         border-bottom:3px solid black;
             }
      
      ul li.menusag{
         float:right;
             }
      
      ul li a {
         display: inline-block;
         padding: 12px 24px;
         text-decoration: none;
         color: #fff;
         font-size: 18px;
                }
      
      ul li.active {
         background-color: black;
         transform: translateX(-3px);
            text-shadow:2px 3px black;
                     }
      
      ul li:hover:not(.active) 
      {
         background-color: black;
            text-shadow:2px 3px black;
        
       }
        </style>