html, body {
    font-family: sans-serif;
    background-color: #3e4247;
    color: #00e5ff;
}

h1 {
    text-align: center;
    font-size: 2.8rem;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin: 10px 0 10px 0;
    text-shadow: 0 0 15px rgba(0, 229, 255, 0.6), 0 0 30px rgba(0, 229, 255, 0.3);
}

hr {
    border: none;
    border-top: 1px solid #333;
    margin-top: 10px;
    margin-bottom: 10px;
}

.navigation {
    display: flex;
    justify-content: center;
}

.navigation > a {
    color: #00bcd4;
    text-decoration: none;
    font-weight: bold;
    margin: 0 10px;
}

.navigation a {
    color: #00bcd4;
    text-decoration: none;
    font-weight: bold;
    margin: 0 10px;
}