/* example z-index */
.ex-z-index,
.ex-content {
  display: grid;
  place-items: center;
}
.ex-z-index {
  max-height: 300px;
}

.z {
  width: 120px;
  height: 120px;
  color: #fff;
  padding: 10px;
}
.z-a {
  background-color: #f0ebe3;
  z-index: 0;
  position: relative;
  top: 0;
  left: 0;
}

.z-b {
  background-color: #e4dccf;
  position: relative;
  z-index: 2;
  top: -50px;
  left: 30px;
}
.z-c {
  background-color: #7d9d9c;
  position: relative;
  z-index: 1;
  text-align: right;
  top: -100px;
  left: 60px;
}
.z-d {
  background-color: #576f72;
  position: relative;
  z-index: 3;
  top: -180px;
  left: 90px;
}
/* responsive mobile */
@media (max-width: 426px) {
  .ex-z-index {
    margin-top: 3rem;
    margin-right: 3rem;
  }
  .ex-content {
    gap: 1rem;
    margin-top: 3rem;
  }
  .content-z-index {
    max-height: 720px;
  }
  .content-obj-fit {
    max-height: 900px;
  }
}