body { margin:0; /* This is used to reset any browser-default margins */ }



div {
/*    height:100vh; */
    width:100vw;
    background: #FFFFFF;
/*    content:url(http://yanisfacilitatedservices.ltd/logo.png); */
}



iframe {
    display: block;       /* iframes are inline by default */
    background: #000;
    border: none;         /* Reset default border */
    height: 100vh;        /* Viewport-relative units */
    width: 100vw;
}