* {
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
    color: #333;
}

header {
    background: linear-gradient(90deg, #4a90e2, #9013fe);
    color: #fff;
    padding: 20px 0;
    text-align: center;
    position: relative;
    z-index: 10;
}

nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav a:hover {
    color: #ffcc00;
}

main {
    padding: 20px;
    position: relative;
    z-index: 5;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

h2 {
    color: #4a90e2;
    border-bottom: 2px solid #4a90e2;
    padding-bottom: 5px;
}

section {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
    padding: 20px;
}

footer {
    text-align: center;
    padding: 10px 0;
    background: #333;
    color: #fff;
}