html,
body,
#out {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

body {
    background: #f3f5f3;
}

.splash {
    display: grid;
    width: 100%;
    height: 100%;
    place-items: center;
    color: #087e68;
    font: 600 16px sans-serif;
}