body {
    font-family: 'San Francisco', sans-serif;
    background: linear-gradient(to bottom, #003B5C, #47C6C2);
    color: white;
    margin: 0;
    padding: 0;
}

.header {
    text-align: center;
    font-size: 2.5em;
    font-family: 'Naskh', serif;
    margin-top: 20px;
}

.button-container {
    display: flex;
    justify-content: center;
    margin-top: 50px;
}

.duration {
    background-color: teal;
    color: white;
    border: none;
    border-radius: 10px;
    padding: 15px 30px;
    margin: 0 10px;
    font-size: 1.5em;
    cursor: pointer;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    display: flex;
    justify-content: space-around;
    background-color: rgba(0,0,0,0.5);
    padding: 10px 0;
}

.bottom-nav a {
    color: white;
    text-decoration: none;
}