* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
}

header {
    background: #4CAF50;
    color: #fff;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    margin: auto;
}

header h1 {
    font-size: 24px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

.hero {
    background: url('https://images.unsplash.com/photo-1518611012118-696072aa579a?auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    color: white;
    text-align: center;
    padding: 100px 20px;
}

.hero h2 {
    font-size: 40px;
}

.hero .btn {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background: #fff;
    color: #4CAF50;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
}

.container {
    width: 90%;
    margin: auto;
    padding: 40px 0;
}

.articles .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.articles article {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.articles article h3 {
    margin-bottom: 10px;
}

.articles article a {
    display: inline-block;
    margin-top: 10px;
    color: #4CAF50;
    text-decoration: none;
    font-weight: bold;
}

.about, .contact {
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 500px;
    margin: auto;
}

form input, form textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 100%;
}

form button {
    padding: 12px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

footer {
    text-align: center;
    padding: 20px;
    background: #333;
    color: white;
    margin-top: 40px;
}