.owl-carousel-trang-thiet-bi .owl-nav,.owl-carousel-doi-ngu-bac-si  .owl-nav{
    position: absolute;
    top: 34%;
    width: 100%;
    /*left: -5%;*/
}
.owl-carousel-trang-thiet-bi .owl-nav .owl-prev,.owl-carousel-doi-ngu-bac-si .owl-nav .owl-prev{
    float: left;
    opacity: 0.3;
    -o-transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    transition: .5s;
}
.owl-carousel-trang-thiet-bi .owl-nav .owl-next,.owl-carousel-doi-ngu-bac-si .owl-nav .owl-next{
    float: right;
    opacity: 0.3;
    -o-transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    transition: .5s;
}

.owl-carousel-trang-thiet-bi .owl-nav .owl-prev span,.owl-carousel-doi-ngu-bac-si .owl-nav .owl-prev span{
    font-size: 70px;
    color: #686868;
    height: 44px;
    line-height: 70px;
}
.owl-carousel-trang-thiet-bi .owl-nav .owl-next span,.owl-carousel-doi-ngu-bac-si .owl-nav .owl-next span{
    font-size: 70px;
    color: #686868;
    height: 44px;
    line-height: 70px;
}
.owl-carousel-trang-thiet-bi .owl-nav .owl-next:hover,.owl-carousel-doi-ngu-bac-si .owl-nav .owl-next:hover{
    background: none;
    opacity: 1.0;
    -o-transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    transition: .5s;
}
.owl-carousel-trang-thiet-bi .owl-nav .owl-prev:hover,.owl-carousel-doi-ngu-bac-si .owl-nav .owl-prev:hover{
    background: none;
    opacity: 1.0;
    -o-transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    transition: .5s;
}
button:focus {outline:0;}
.col-5{
    width:20%;
    float: left;
    padding: 5px;
}
.col-md-offset-1phet5 {
    margin-left: 8.33333333%;
}