styles.css

body.options {
    background-color: rgba(217, 222, 255, 0.7);
    padding: 20px;
}

h1 {
    margin-top: 0;
}

.options ul {
    margin: 0;
    padding: 0;
}
.options ul li {
    list-style: none;
    border-left: 3px solid #1726b8;
    padding: 10px 0 10px 15px;
    margin-bottom: 15px;
    background: white;
}
.options ul li:nth-of-type(2) {
    border-color: #1d6218;
}
.options ul li:nth-of-type(3) {
    border-color: #892d1e;
}
.options ul li h2 { padding : 0; margin: 0;}
.options ul li input[type=checkbox] {
    -moz-transform: scale(1.5); /* FF */
    -webkit-transform: scale(1.5); /* Safari and Chrome */
    padding: 10px;
    margin-right: 10px;
}
.options .buttons { text-align: left; }
.options form button[type=submit] {
    font-size: 1.3em;
    width: 15%;
    text-align: center;
}