body {
    background-color: #f0f8ff;
    font-family: 'Helvetica Neue', sans-serif;
    color: #333;
}

h1, h2, h3 {
    color: #4CAF50;
}

a {
    color: #008CBA;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

.container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 15px;
}

nav {
    background-color: #333;
    overflow: hidden;
}

nav a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav a:hover {
    background-color: #ddd;
    color: black;
}