.tube{

            

            font-size: 45px;

            text-align: center;

            color: #EB2519;

            font-family: raleway,sans-serif;

            

            

            

        }

     #jj

        {

             transition: 0.5s;

        }

        #jj:hover{

            

            transform: rotate(360deg);

            transition: 0.5s;

        }

    .nvr{

            

            background-color: orange;

            color: white;

            border-style: none;

        }

     .tt{

            

            height: 250px;

         width: 100%;

           

       

             transition: 0.7s;

        }

    

        .tt:hover{

            

            border: solid 7px #999966;

            transition: 0.7s;

            opacity: 0.6;

            

        }

     .hover_nav_li:hover{

            

            

            background-color:chocolate;

            

        }

    </style>