* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
}
html {
    scroll-behavior: smooth;
}

body {
    font-family: Helvetica, Arial, sans-serif;
    background: linear-gradient(#011430, #3e5ae2, #00ffff) fixed;
    font-size: 20px;
    color: #333;
}

header {
    color: #fff;
    text-align: center;
    padding: 20px;

    h1 {
        font-size: 40px;
        margin: 0;
    }
}

main {
    max-width: 1024px;
    margin: 0 auto;
    box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.5);
    padding: 10px;
    background-color: white;
}

form {
    input {
    }

    textarea {
    }

    button {
    }
}