body {
    background-color: #e0f7e9;
    color: #333;
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #009688;
    color: white;
    text-align: center;
    padding: 10px 0;
    font-size: 24px;
}

nav {
    background-color: #00796b;
    color: white;
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 5px 15px;
    transition: background-color 0.3s ease;
}

nav a:hover {
    background-color: #004d40;
}

main {
    padding: 20px;
    line-height: 1.6;
}

footer {
    background-color: #009688;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}

.button {
    background-color: #4caf50;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    transition-duration: 0.4s;
    cursor: pointer;
}

.button:hover {
    background-color: white;
    color: black;
}