   padding: 10vmin;
                position: fixed;
                text-align: center;
                top: 50%;
                transform: translate(-50%,-50%)
            }
        </style>

        <div style="height:100%;width:100%;margin:0;position:fixed;">
            <div class="mud-wasm"></div>
            <div class="mud-wasm" style="animation-direction:alternate-reverse;animation-duration:4s;"></div>
            <div class="mud-wasm" style="animation-duration:5s;"></div>
            <div class="