div.form {
    max-width:600px;
    background-color:#f3f3f3;
    border-radius: 25px;
    margin:50px auto 0 auto;
    padding:30px;
}
div.form.registration {
    max-width:800px;
}

div.form > *:first-child {
    margin-top:0px;
}
div.form > p {
    margin-top: 1em;
}

div.form div.checkboxes + div.checkboxes {
    margin-top: 10px;
}