* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.wrapper {
  width: 100%;
  height: 100vh;
}

.row {
  padding: 40px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.loading {
  display: flex;
  position: relative;
  font-size: 30px;
  color: #fff;
  justify-content: center;
  top: -50px;
  padding: 20px;
}
.loading span {
  display: inline-block;
  margin: 0 10px;
  color: blueviolet;
  animation: loading 1s ease-in-out infinite;
}
@keyframes loading {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.card-item {
  margin: 20px 20px;
  padding: auto;
  width: 400px;
  height: 400px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 0 10px #00000033;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media screen and (max-width: 964px) {
  .row {
    padding: 20px;
  }
  .card-item {
    margin: auto;
    margin-bottom: 60px;
    width: 400px;
    height: 400px;
  }
}

@media screen and (max-width: 768px) {
  .row {
    padding: 20px;
  }
  .card-item {
    margin: 10px 10px;
    width: 200px;
    height: 200px;
  }
}

@media screen and (max-width: 482px) {
  .row {
    padding: 10px;
  }
  .card-item {
    margin: 20px auto;
    padding: 20px;
    width: 400px;
    height: 400px;
  }
}