* {
  box-sizing: border-box;
  font-family: sans-serif;
}

body {
  padding: 0;
  margin: 0;
  text-align: center;
}

#cards {
  display: grid;
  gap: 16px;
  justify-content: center;
  grid-template-columns: 1fr;
  grid-template-rows: auto;
  margin: 10px auto;
}

.card {
  width: 80%;
  height: 200px;
  margin: auto;
  font-size: 14px;
  line-height: 24px;
  padding: 10px;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.5);
  border-radius: 10px;
}

#loader {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  margin: 10px auto;
  color: #0000ff;
}

@media screen and (min-width: 768px) {
  #cards {
    grid-template-columns: 1fr 1fr;
  }
}