.icon-arrow-a-left, .icon-arrow-a-right {
    background: url(../img/icon-sd26986d847.png) no-repeat;
}

.icon-arrow-a-left {
    background-position: 0 0; height: 50px; width: 50px;
}

.icon-arrow-a-left:hover, .icon-arrow-a-left.arrow-a-left_hover, .icon-arrow-a-left.arrow-a-left-hover {
    background-position: -60px 0;transition: all 0s !important;
}

.icon-arrow-a-right {
    background-position: -120px 0;
    height: 50px;
    width: 50px;
}

.icon-arrow-a-right:hover, .icon-arrow-a-right.arrow-a-right_hover, .icon-arrow-a-right.arrow-a-right-hover {
    background-position: -180px 0;transition: all 0s !important;
}
.banner_box{   
    height: 460px;
    width: 100%;
    margin: 0px auto 30px auto;
    overflow: hidden;}

#index_b_hero {
    width: 1380px;
    margin: auto;
    position: relative;
}

#index_b_hero .helper {
    position: relative;
    height: 460px;
}


#index_b_hero img {
    width: 100%;
    height: auto;
}

#index_b_hero .heros {
    width: 1380px;
}

#index_b_hero .hero-wrap {
    overflow: visible;
    position: absolute;
}
#index_b_hero .heros li a{  
   display: block;
    width: 100%;
 }
#index_b_hero .next, #index_b_hero .prev {
    filter: alpha(Opacity=70);
    opacity: .5;
    position: absolute;
    top: 50%;
    margin-top: -25px;
    margin-left: 0;
    background-color: #9b1c27;
    z-index: 3;
}

#index_b_hero .next:hover, #index_b_hero .prev:hover {
    background-color: #9b1c27;
    opacity: .8;
}

#index_b_hero .next {
    margin: -25px 0 0 0;
    right: 0;
}

#index_b_hero .disabled {
    background-color: #eee;
}

#index_b_hero .mask-left, #index_b_hero .mask-right, #index_b_hero .hero {
    padding: 0;
    z-index: 1;
    position: absolute;
    top: 0;
    width: 1380px;
    overflow: hidden;
    left: 2520px;
}

#index_b_hero .hero h1{
  position: absolute;
    bottom: 30px;
    max-width: 550px;
    height: 50px;
    line-height: 50px;
    overflow: hidden;
    left: 50%;
margin-left:-580px;
color:#fff;
padding:0 20px;
font-size:24px;
font-weight:700;
    background: rgba(155,28,39,0.5);
}

#index_b_hero .mask-right, #index_b_hero .mask-left {
    z-index: 4;
    left: -1260px;
    filter: alpha(Opacity=50);
    opacity: .5;
    background: #ffffff;
    overflow: hidden;
}

#index_b_hero .mask-right {
    left: 1260px;
}

#index_b_hero .active {
    z-index: 2;
    left: 0;
}