body {
    background-color: #243447;
    margin: 0;
    padding: 0;
    font-family: arial;
    color: #fff;
    font-size: 2rem;
}

.container {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.text {
    width: 500px;
}

footer {
    width: 100%;
    background: rgba(0,0,0,.5);
    text-align: center;
    font-size: 1rem;
    padding: 100px 0;
}

a:link, a:hover, a:active, a:visited {
    color: #fff;
}

@media only screen and (max-width: 768px) {
    body {
        font-size: 1rem;
    }

    .text {
        width: 250px;
    }

    footer {
        font-size: .5rem;
    }
}