ul, li {
            padding: 0;
            margin: 0;
            list-style: none inside;
            }
    
            ul.slider {
            position: relative;
            }
    
            ul.slider li {
            opacity: 0;
            transition: opacity .5s;
            position: absolute;
            left: 0px;
            top: 0px;
            margin: 50px;
            padding: 50px;
            border: 2px solid red;
            background: #fff;
            }
    
            ul.slider li:first-child {
                opacity: 1;
            }
    
            ul.slider li:target {
                opacity: 1;
            }
    
            nav1 {
            position: relative;
            top: 200px;
            left: 50px;
            }
    
    
            
    
            ul, li {
            box-sizing: border-box;
            }
    
            ul.slider {
            padding: 30px;
            }
    
            ul.slider li {
            width: 100vw;
            height: 100vh;
            margin: 0;
            padding: 0;
            border: 0;
            background-color: gray;
            opacity: 0;
            transition: opacity .5s;
            padding-top: 30vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            font-weight: bold;
            font-size: calc( 1.5rem + 1vw );
            text-align: center;
            }
    
            #slide1 {
            background-color: #00324b;
            color: #fff;
            }
    
            #slide2 {
            background-color: #65bce8;
            color: #00324b;
            }
    
            #slide3 {
            background-color: #f90;
            color: #00324b;
            }
    
            #slide4 {
            background-color: #00324b;
            color: #65bce8;
            }
    
            #slide5 {
            background-color: #65bce8;
            color: #00324b;
            }
    
            nav1 {
            width: 100vw;
            position: absolute;
            top: auto;
            right: 0;
            bottom: 0;
            left: 0;
            background: #f1f2f3;
            }
    
            nav1 ul {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            }
    
            nav1 ul li {
            display: flex;
            flex-grow: 1;
            flex-wrap: wrap;
            
            }
    
            nav1 a {
            font-size: calc( 1.2rem + 1vw );
            text-decoration: none;
            font-weight: bold;
            color: #00324b;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            flex-grow: 1;
            text-align: center;
            border-top: 5px solid #00324b;
            border-right: 1px solid #00324b;
            flex-wrap: wrap;
            position: relative;
            }
    
            nav1 li:last-child a {
            border-right: 0;
            }
    
            nav1 a:hover {
            background-color: #00324b;
            color: #fff;
            border-top-color: #65bce8;
            }
    
            nav1 a:active {
            border-top-color: #f90;
            background: #f90;
            color: #00324b;
            }