.interview-pic .prev,
.interview-pic .next {
    display: none;
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 40px;
    height: 40px;
    margin-top: -20px;
    line-height: 40px;
    text-align: center;
    font-size: 16px;
    background: rgba(0, 0, 0, 0.5);
    filter: progid:DXImageTransform.Microsoft.gradient(startcolorstr=#7F000000, endcolorstr=#7F000000);
    color: #fff;
    animation-duration: .3s;
}

.interview-pic:hover .prev,
.interview-pic:hover .next {
    display: block;
}

.interview-pic .prev:hover,
.interview-pic .next:hover {
    background: #37e;
    filter: none;
    color: #fff;
}

.interview-pic .prev {
    left: 0;
}

.interview-pic .next {
    right: 0;
}