.slider_container {
    visibility: hidden; position: relative; margin: 0 auto;
    top: 0px; left: 0px; width: 1300px; height: 500px; overflow: hidden;
}
.slider_spin {
    position:absolute;
    top:0px;
    left:0px;
    width:100%;
    height:100%;
    text-align:center;
    background-color:rgba(0,0,0,0.7);
}
.slider_spin img {
    margin-top:-19px;
    position:relative;
    top:50%;
    width:38px;
    height:38px;
}
.slider_slides {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 1300px;
    height: 500px;
    overflow: hidden;
}

.slider_nav {position:absolute; bottom:12px;right:12px;}
.slider_nav .i {position:absolute;cursor:pointer;}
.slider_nav .i .b {fill:#000;fill-opacity:0.5;stroke:#fff;stroke-width:1200;stroke-miterlimit:10;stroke-opacity:0.3;}
.slider_nav .i:hover .b {fill:#fff;fill-opacity:.7;stroke:#000;stroke-opacity:.5;}
.slider_nav .iav .b {fill:#fff;stroke:#000;fill-opacity:1;}
.slider_nav .i.idn {opacity:.3;}