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

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

header {
  padding: 1.5rem 1rem;
  background: #5e5757;
  font-size: 2rem;
  font-weight: 700;
  color: white;
}
main {
  padding: 1.5rem 1rem;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, 20em);
  justify-content: center;
  gap: 20px;
}

.card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: 20em;
  padding: 1rem;
  border-radius: 5px;
  border: 1px solid black;
}
.card__title {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}
.card__content {
  margin-bottom: 0.5rem;
}
.card__button {
  width: 100%;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 5px;
}
footer {
  padding: 1rem;
  text-align: center;
  background-color: #eee;
}