html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}
.cover {
  position: absolute;
  background-color: rgba(0,0,0,.64);
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  display:flex;
}
.content {
  color: #fff;
  font-weight: bold;
  font-size: 3rem;
}
.swiper-container {
    width: 100% !important;
    height: 100% !important;
    postion: relative;
    z-index:1;
}
.intro-swiper__item {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}