#wpr-comments-categories {
    display: block;
    position: relative;
    margin: 20px;
}

#wpr-comments-categories li {
    list-style-type: none;
    display: inline-block;
    float: none;
    margin-right: 10px;
}

.comment-form-category select[name="comment-category"] {
    margin-left: 10px;
}