:root {
    --header-colour: #00000031;
    --main-colour: #393e41;
    --footer-colour: #00000031;
    --text-colour: #f6f7eb;
    --text-accent-colour: #e94f37;

    --header-size: 100px;
}



html, body {
    width: 100%;
    height: 100%;
    margin: 0;
}

body {
    color: var(--text-colour);
    font-family: sans-serif;
    display: flex;
    flex-flow: column;
    background-color: var(--main-colour);
}



header main footer {
    width: 100%;
}

header {
    position: fixed;
    top: 0;
    background-color: var(--header-colour);
}

/* Required to set the width and height of the header, as `fixed` elements can't have their size set. */
header > div {
    width: 100vw;
    height: var(--header-size);
}

main {
    flex: 1 1 auto;
    margin-top: var(--header-size);
    text-align: center;
    background-color: var(--main-colour);
}

footer {
    flex: 0 1 auto;
    display: flex;
    background-color: var(--footer-colour);
}

footer > div {
    width: 50%;
}



#imaText { /* The text directly after "I'm a" */
    color: #5a91ff;
}