.background {
  position: relative;
  background-color: #ffffff;
  overflow: hidden;
  width: 100%;
  height: 850px;
}

.img {
  width: 1200px;
  height: 650px;
  position: absolute;
  left: 50%;
  top: 5%;
  transform: translateX(-50%);
  background-color: #505050;
  padding: 50px;
  box-shadow: 0 0 25px -10px rgb(90, 90, 90);
}

.item {
  width: 200px;
  height: 300px;
  display: inline-block;
  position: absolute;
  top: 50%;
  margin-top: -150px;
  border-radius: 20px;
  box-shadow: 0 0 25px -10px rgb(90, 90, 90);
  background-position: center;
  background-size: cover;
  transition: .5s;
}

.item:nth-child(1),
.item:nth-child(2) {
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin-top: 0;
  border-radius: 0;
  box-shadow: none;
}

.item:nth-child(3) { left: 50%; }
.item:nth-child(4) { left: calc(50% + 220px); }
.item:nth-child(5) { left: calc(50% + 440px); }
.item:nth-child(n+6) {
  left: calc(50% + 660px);
  opacity: 0;
}

.item .lhx {
  position: absolute;
  left: 100px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  font-family: system-ui;
  color: #000;
  display: none;
}
.item:nth-child(2) .lhx {
  display: block;
}

.item .name {
  font-size: 30px;
  font-weight: bold;
  opacity: 0;
  animation: showlhx 1s ease-in-out forwards;
}

.item .des {
  margin: 20px 0;
  font-size: 12px;
  font-weight: bold;
  opacity: 0;
  animation: showlhx 1s ease-in-out 0.3s forwards;
}

@keyframes showlhx {
  from {
    opacity: 0;
    transform: translateY(100px);
    filter: blur(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.buttons {
  width: 100%;
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.s_button {
  display: inline-block;
  width: 50px;
  height: 50px;
  line-height: 50px;
  margin: 0 25px;
  font-size: 25px;
  font-weight: bold;
  text-align: center;
  color: rgb(39, 64, 255);
  background-color: #fff;
  border: 1px solid #1c50ee;
  border-radius: 30%;
  opacity: 0.6;
  transition: 0.5s;
}

.s_button:hover {
  cursor: pointer;
  background-color: #ccc;
}