* {
    box-sizing: border-box;
}

@font-face {
    font-family: OpenSan;
    src: url('OpenSans-ExtraBoldItalic.ttf');
}

body {
    font-family: OpenSan, sans-serif;
    font-size: 16px;
    background-color: black;
    color: silver;
}

#container {
    text-align: center;
}

#container h1 {
    font-size: 4.6em;
    margin: 0;
}

#container h2 {
    font-size: 4em;
    margin: 0;
}

#container h3 {
    margin: 0;
    font-size: 2.4em;
}

#container h5 {
    margin: 30px 0 0 0;
    font-size: 1.4em;
}

#child0, #child1, #child2 {
    margin: 0 5%;
}

p {
    text-align: center;
    margin-top: 10%;
}


@media screen and (min-width: 600px) {
    #container {
        display: flex;
        justify-content: center;
    }
    #child0, #child1, #child2 {
        flex: 1;
    }
}