h1,
h2,
h3 {
    margin: 0;
    padding: 0;
}

body {
    background: #4ae;
    color: #000040;
    padding: 0;
    margin: 0;
}

h1,
h2,
#stopka {
    background: #000040;
    color: #8080ff;
    text-align: center;
}

#tresc {
    background: #80ffff;
}

#menu {
    background: #ffffff;
}

form {
    margin: auto;
    width: 200px;
}