h3 {
    color: #b33;
    margin-top: 1.5em;
}
ul {
   margin: 0 0 1em 1.5em;
}
a {
    display: block;
    color: #333;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
#mainB{
    margin-left: 10px;
}