Untitled

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}
header {
    background: #4CAF50;
    color: white;
    text-align: center;
    padding: 1rem;
}
nav {
    display: flex;
    justify-content: space-around;
    background: #333;
    padding: 1rem 0;
}
nav a {
    color: white;
    text-decoration: none;
}
nav a:hover {
    color: #4CAF50;
}
section {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin: 2rem 0;
}
article {
    width: 30%;
    background: #f4f4f4;
    padding: 1.5rem;
    margin: 1rem;
    border-radius: 5px;
    box-shadow: 1px 2px 5px rgba(0, 0, 0, 0.1);
}
h3 {
    text-align: center;
    border-bottom: 2px solid #4CAF50;
    padding-bottom: 5px;
}
button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    margin-top: 1rem;
    cursor: pointer;
    border-radius: 5px;
}
button:hover {
    background: #333;
}
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}