body {
    margin: 0;
}

.main {
    font-family: monospace;
    position: fixed;
    align-items: center;
    text-align: center;
    width: 100%;
    height: 100%;
    background: #222222;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    z-index: 99999;
}

img.logo {
    width: 25%;
}

h1.message,
img.logo {
    filter: drop-shadow(0 0 1em #ffffff);
}