#quiz_options { 
    width: 90%; 
    margin: 0 auto 30px auto;
}

#quiz_options ul {
    list-style-type: none;
    margin:  15px 0 0 0;
    padding: 0;
}

#quiz_options li {
    width:   100%;
    display: block;
    padding: 15px 0 15px 0;
    margin:  0px;
    background-color: #ffffff;
}

#quiz_options li:hover {
    background-color: #f4f4f4;
    border-top: 1px solid #D0D0D0;
    border-bottom: 1px solid #D0D0D0;
}