css
body {
    background-image: linear-gradient(-45deg, #ff69b4, #ff69b4);
    background-size: 200px 200px;
    background-position: center;
    padding: 20px;
    font-family: "Open sans", sans-serifประก
}

h1 {
    border: 4px solid black;
    background-color: #fff;
    padding: 20px;
    font-size: 32px;
    text-align: center;
    color: #333;
    text-shadow: 0 0 10px #333;
}

h2 {
    border: 4px solid black;
    background-color: #fff;
    padding: 20px;
    font-size: 24px;
    text-align: center;
    color: #333;
    text-shadow: 0 0 10px #333;
}

h3 {
    border: 4px solid black;
    background-color: #fff;
    padding: 20px;
    font-size: 20px;
    text-align: center;
    color: #333;
    text-shadow: 0 0 10px #333;
}

p, li, a {
    font-size: 14px;
    color: #666;
    margin: 20px;
}

a {
    text-decoration: none;
    color: #999;
    background-color: #fff;
    padding: 10px 20px;
    border: 2px solid #333;
    border-radius: 5px;
    text-shadow: 0 0 10px #333;
}