body {
    text-align: center;
}

h1 {
    margin: 2em 0em 0em 0em;
}

h1 > img {
    display: inline-block;
    height: auto;
    max-width: 100%;
}

#subtitle {
    font-size: 0.9em;
    margin: 0em;
}

nav {
    box-sizing: border-box;
    margin: 3em 0em;
}

ul {
    list-style-type: none;
    margin: 0 auto;
    max-width: 250px;
    padding: 0px;
}

li {
    display: block;
    margin: 20px 0px;
}

.button {
    display: block;
}

.secondary-button:link,
.secondary-button:visited {
    display: inline-block;
    background-position: bottom;
    margin: 0px 5px;
    height: 30px;
    width: 30px;
}

#credits-button:link,
#credits-button:visited {
    background-image: url("../img/button-credits.svg");
}

#language-button:link,
#language-button:visited {
    background-image: url("../img/button-language.svg");
}

#news-button:link,
#news-button:visited {
    background-image: url("../img/button-news.svg");
}

#manual-button:link,
#manual-button:visited {
    background-image: url("../img/button-rules.svg");
}

#payment-button:link,
#payment-button:visited {
    background-image: url("../img/button-payment.svg");
}

#settings-button:link,
#settings-button:visited {
    background-image: url("../img/button-settings.svg");
}

#credits-button:active,
#credits-button:focus,
#credits-button:hover,
#language-button:active,
#language-button:focus,
#language-button:hover,
#news-button:active,
#news-button:focus,
#news-button:hover,
#manual-button:active,
#manual-button:focus,
#manual-button:hover,
#payment-button:active,
#payment-button:focus,
#payment-button:hover,
#settings-button:active,
#settings-button:focus,
#settings-button:hover {
    background-position: top;
}