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

header {
    padding: 10px 15px;
    border-bottom: 1px solid #00000050;
}

main {
    flex: 1;
    padding: 20px;
}

footer {
    text-align: center;
    padding: 15px 0;
}

footer a {
    color: #00000050;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}