.rating {
    overflow: hidden;
    display: inline-block;
    font-size: 0;
    position: relative;
}
.rating-input {
    float: right;
    width: 16px;
    height: 16px;
    padding: 0;
    margin: 0 0 0 -16px;
    opacity: 0;
}
.rating:hover .rating-star:hover,
.rating:hover .rating-star:hover ~ .rating-star,
.rating-input:checked ~ .rating-star {
    background-position: 0 0;
}
.rating-star,
.rating:hover .rating-star {
    position: relative;
    float: right;
    display: block;
    width: 16px;
    height: 16px;
    background: url('https://home.et.utwente.nl/slootenvanf/wp-content/plugins/fvs-peer-review/img/star.png') 0 -16px;
}