html, body {
    height: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.content {
    flex: 1;
}

.footer {
    text-align: center;
    padding: 10px 0;
    color: black;
    width: 100%;
    position: relative;
    bottom: 0;
    margin-top: auto;
}