html, body {
	height: 100%;
}
body {
    margin: 0px;
    background-color: #131415;
    display: flex;
	flex-direction: column;
}
.content {
    flex: 1;
}
header {
    height: 512px;
    background-image: url(images/header_background.png);
    position: relative;
}
header .photo-container {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 470px;
}
header .photo-container img {
    height: 100%;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
header .language {
    position: absolute;
    right: 40px;
    top: 40px;
    color: white;
    opacity: .7;
    text-decoration: none;
    font-size: 14px;
    font-family: Helvetica, sans-serif;
    padding: 6px;
    border-radius: 4px;
}
header .language:hover {
    background-color: #6A6A6A;
}
.buttons-container {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 40px;
}
.buttons-container a {
    color: white;
    opacity: .7;
    text-decoration: none;
    font-size: 20px;
    font-family: Helvetica, sans-serif;
    padding: 4px 6px 4px 6px;
    border-radius: 4px;
    margin: 0px 2px 0px 2px;
}
.buttons-container a:hover {
    background-color: #373737;
}
footer {
    margin: 40px;
    opacity: .6;
    font-size: 14px;
    font-family: Helvetica, sans-serif;
}
footer p {
    margin: 0px;
    color: white;
}
footer a {
    color: white;
}
@media only screen and (max-device-width: 480px) {
    header .language {
        font-size: 28px;
    }
    .buttons-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-top: 80px;
        margin-bottom: 80px;
    }
    .buttons-container a {
        font-size: 40px;
        margin: 8px 0px 8px 0px;
    }
    footer {
        font-size: 28px;
    }
}