body {
    margin: 0;
    overflow: hidden;
}

a {
    position: fixed;
    top: 5px;
    left: 5%;
    z-index: 999;
    width: 15px;
}

@media (max-width: 750px) {
    a {
        right: 30px;
    }
}

iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    
    border: none;
}