* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background: #f5f7fb;
    color: #222;
}

header {
    background: #2563eb;
    color: white;
    padding: 20px;
    text-align: center;
}

main {
    max-width: 900px;
    margin: 60px auto;
    padding: 20px;
    text-align: center;
}

h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

p {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.button {
    display: inline-block;
    background: #2563eb;
    color: white;
    text-decoration: none;
    padding: 14px 25px;
    border-radius: 8px;
    transition: 0.3s;
}

.button:hover {
    background: #1d4ed8;
}

footer {
    text-align: center;
    padding: 30px;
    color: #666;
}