body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
}

header {
    background-color: #7bae92;
    color: #fff;
    height: 7vh;
    padding-top: 2vh;
    overflow: hidden;
    width: 100%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    position: fixed;
    top: 0;
}

nav {
    background-color: #f4f4f4;
    margin-top: 8vh;
    padding: 5px;
    text-align: center;
}

nav a {
    margin: 0 15px;
    text-decoration: none;
    color: #333;
}

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

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
}