.partners-sprite_additional_01 {
    background-image: url(../img/partners/16a.png);
    background-size: cover;
    background-repeat: no-repeat;
    display: block;
    width: 41px;
    height: 39px;
    opacity: 0.5;
}

.partners-sprite_additional_01:hover {
    background-image: url(../img/partners/16.png);
    background-repeat: no-repeat;
    background-size: cover;
    display: block;
    width: 41px;
    height: 39px;
    opacity: 1;
}

.partners-sprite_additional_02 {
    background-image: url(../img/sun.png);
    background-size: 75px;
    background-repeat: no-repeat;
    display: block;
    width: 75px;
    height: 20px;
    margin-top: 8px;
    margin-left: 5px;
    opacity: 0.5;
}

.partners-sprite_additional_02:hover {
    background-position: 0 -23px;
    opacity: 1;
}