.swiper {
    width: 100%;
    height: 500px;
}
.swiper-slide img {
    width: 100%;
    height: 85%;
    border-radius: 20px;
    transition: all .2s linear;
    cursor: pointer;
}
.swiper-slide {
    position: relative;
    height: 350px;
}
.swiper-slide h4 {
    position: absolute;
    left: 0;
    top: 50%;
    z-index: 10;
    transform: translateY(-30%);
    width: 100%;
    text-align: center;
    opacity: 0;
    transition: all .2s linear;
}
.swiper-slide:hover.swiper-slide h4 {
    transform: translateY(-50%);
    opacity: 1;
}
.swiper-slide:hover.swiper-slide img {
    opacity: .5;
}