main {
    display: none;
}

#incompatible {
    height: 100vh;
    padding: 15px;
    background: #111;
    color: #FFF;
    display: flex;
    flex-direction: column;
    text-align: center;
    justify-content: center;
}

    #incompatible h3 {
        margin-bottom: 15px;
    }