.arrow-left {
    opacity: 0;
    background: url(../img/arrow_L_38x38.png) center no-repeat;
    margin-right: auto;
    width:88px;
}
.arrow-right {
    opacity: 0;
    background: url(../img/arrow_R_38x38.png) center no-repeat;
    margin-left: auto;
    width:88px;
}

input[type="radio"] + label {
    position: relative;
    margin: 10px;
    display: inline-block;
    background-image: url("../img/btn_radiooff_24x24.png");
    background-repeat: no-repeat;
    background-size: contain;
    width: 20px;
    height: 20px;
}

.hide input[type="radio"] + label {
    width: 24px;
    height: 24px;
}
 
input[type="radio"]:checked + label {
    background-image: url("../img/btn_radioon_24x24.png");
    background-repeat: no-repeat;
    background-size: contain;
    width: 20px;
    height: 20px;
}
.hide input[type="radio"]:checked + label {
    width: 24px;
    height: 24px;
}