.osSlider-main .slider-btn-prev
{
    position: absolute;
    z-index: 30;
    top: 50%;
    left: -45px;
    width: 40px;
    height: 40px;
    text-indent: -9999px;
    margin-top: -20px;
    background: url(/images/prev.png) 50% 50% no-repeat;
    transition: all .5s linear;
}
.osSlider-main:hover .slider-btn-prev
{
    left: 15%;
}
.osSlider-main .slider-btn-next
{
    position: absolute;
    z-index: 30;
    top: 50%;
    right: -45px;
    width: 40px;
    height: 40px;
    text-indent: -9999px;
    margin-top: -20px;
    background: url(/images/next.png) 50% 50% no-repeat;
    transition: all .5s linear;
}
.osSlider-main:hover .slider-btn-next
{
    right: 15%;
}
.osSlider-main .slider-nav
{
    position: absolute;
    width: 100%;
    height: 22px;
    bottom: 20px;
    text-align: center;
    z-index: 25;
}
.osSlider-main .slider-nav li
{
    display: inline-block;
    height: 18px;
    line-height: 18px;
    width: 18px;
    margin: 0 12px;
    text-indent: -9999px;
    background: rgba(255,255,255,.7);
    cursor: pointer;
    border-radius: 50%;
}
.osSlider-main .slider-nav li.active
{
    color: #333;
    background: #fff;
}
.osSlider-main .slider-nav li:hover
{
    background: #fff;
}