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

:root {
  --red: hsl(0, 78%, 62%);
  --cyan: hsl(180, 62%, 55%);
  --orange: hsl(34, 97%, 64%);
  --blue: hsl(212, 86%, 64%);
  --grey-500: hsl(234, 12%, 34%);
  --grey-400: hsl(212, 6%, 44%);
  --white: hsl(0, 0%, 100%);
}

html {
  font-family: Poppins, sans-serif;
  font-size: 93.75%;
}

main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
h1,
p {
  color: var(--grey-400);
}
h2 {
  color: var(--grey-500);
}
.content-container {
  width: fit-content;
}

.content-container .headings {
  margin-bottom: 0.5em;
}
.content-container .headings,
.paragraph {
  text-align: center;
}
.paragraph {
  margin: 0 auto;
  width: 67%;
  font-weight: 500;
}
.headings h1 {
  font-weight: 200;
}
.headings h2 {
  font-size: 2em;
  font-weight: 600;
}
.card-container {
  margin-top: 4rem;
  display: grid;
  height: 60vh;
  column-gap: 2em;
  grid-template-columns: 1fr 1fr 1fr;
  grid-auto-rows: auto auto;
}

.card-1,
.card-2,
.card-3,
.card-4 {
  width: 300px;
  max-width: 300px;
  min-width:200px;
  height: 200px;
  border-radius: 7px;
  position: relative;
  padding: 20px;
  background-color: var(--white);
  box-shadow: 0 20px 25px rgba(0, 0, 0, 0.08), 0 10px 10px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card-1:hover,
.card-2:hover,
.card-3:hover,
.card-4:hover {
  transform: translateY(-5px);
  box-shadow: 0 30px 40px rgba(0, 0, 0, 0.12), 0 10px 15px rgba(0, 0, 0, 0.06);
}
.card-1 img,
.card-2 img,
.card-3 img,
.card-4 img {
  position: absolute;
  bottom: 20px;
  right: 20px;
}
.card-1 {
  border-top: 4px solid var(--red);
}
.card-2 {
  border-top: 4px solid var(--orange);
}
.card-3 {
  border-top: 4px solid var(--blue);
}
.card-4 {
  border-top: 4px solid var(--cyan);
}
.cards .two-cards > div {
  height: 200px;
}
.cards,
.two-cards {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 2em;
}
.card-1,
.card-3 {
  align-self: center;
}

@media (max-width: 960px) {
  html {
    font-size: 81.25%;
  }
  main {
    margin: 2rem;
  }
  .card-container {
    width: 100%;
    height: 100%;
  }
  .card-1,
  .card-2,
  .card-3,
  .card-4 {
    width: 100%;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 75%;
  }
  .card-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
    height: auto;
    gap: 1.5em;
    display: flex;
    flex-direction: column;
  }
  .cards {
    display: contents;
  }
  .two-cards {
    display: contents;
  }
  .card-2,
  .card-4 {
    align-self: center;
  }
}

@media (max-width: 375px) {
  html {
    font-size: 71.5%;
  }
  main {
    margin: 2rem;
  }
  .content-container,
  .paragraph {
    width: 100%;
  }
  .card-container {
    width: 100%;
    height: 100%;
  }
  .card-1,
  .card-2,
  .card-3,
  .card-4 {
    width: 100%;
  }
}