body {
    background-color: #8bd3a9;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #111;
}

h1 {
    text-align: center;
    font-size: 40px;
    font-weight: bold;
    margin-top: 40px;
}

section {
    width: 60%;
    margin: 30px auto;
    text-align: center;
}

.main-nav {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn {
    display: inline-block;
    background: #ffffffcc;
    color: #111;
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 6px;
    border: 1px solid #777;
    font-weight: bold;
}

.btn:hover {
    background: #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}