html, body {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        table {
            table-layout: fixed;
            width: 100vw;
            height: 100vh;
            border-collapse: collapse;
        }
        .row {
            width: 100%;
        }
        .cell {
            text-align: center;
            vertical-align: middle;
        }
        a {
            display: block;
            height: 100%;
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 8vw;
            text-decoration: none;
            font-family: Calibri, sans-serif;
            
        }