styles.css

:root {
  --pale-blue: hsl(225, 100%, 94%);
  --bright-blue: hsl(245, 75%, 52%);
  --very-pale-blue: hsl(225, 100%, 98%);
  --desaturated-blue: hsl(224, 23%, 55%);
  --dark-blue: hsl(223, 47%, 23%);
}

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

body {
  font-family: "Manrope", sans-serif;
  background-color: var(--pale-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.bg_desktop {
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}

.bg_mobile {
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  display: none;
}

.card {
  box-shadow: 0px 0px 25px rgba(0, 0, 0, 0.25);
  width: 25rem;
  background-color: white;
  border-radius: 1rem;
  overflow: hidden;
  margin: 1rem 0;
}

.card_hero {
  width: 100%;
}

.card_heading {
  color: var(--dark-blue);
  font-weight: 700;
  font-size: 1.5rem;
  margin: 2rem 0 0rem 0;
  text-align: center;
}

.card_info {
  color: var(--desaturated-blue);
  text-align: center;
  padding: 0.5rem 2rem;
}

.card_pricing {
  background-color: var(--very-pale-blue);
  width: 80%;
  margin: 1rem auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 1rem;
}

.pricing_text {
  display: flex;
  align-items: center;
}

.pricing_text img {
  margin-right: 0.5rem;
}

.pricing_text div {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  height: 100%;
}

.pricing_text h4 {
  color: var(--dark-blue);
}

.card_link {
  color: var(--bright-blue);
  transition: all 0.3s ease 0s;
}

.pricing_text p {
  color: var(--desaturated-blue);
}

.card_btn {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  margin: 2rem 0 1rem 0;
}

.btn_pay {
  background-color: var(--bright-blue);
  box-shadow: 0px 8px 15px rgba(0, 0, 255, 0.25);
  transition: all 0.3s ease 0s;
  cursor: pointer;
  border: none;
  color: white;
  width: 80%;
  padding: 0.8rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 500;
}

.btn_cancel {
  background-color: transparent;
  transition: all 0.3s ease 0s;
  cursor: pointer;
  border: none;
  color: var(--desaturated-blue);
  width: 80%;
  padding: 0.8rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  margin-top: 1rem;
}

.btn_pay:hover {
  background-color: hsl(245, 100%, 68%);
  transform: scale(1.05);
}

.btn_cancel:hover {
  transform: scale(1.05);
  color: var(--dark-blue);
}

.card_link:hover {
  text-decoration: none;
  transform: scale(1.05);
}

/* responsive styles for mobile width */
@media (max-width: 375px) {
  .card {
    width: 18rem;
  }

  .card_pricing,
  .btn_pay,
  .btn_cancel {
    width: 90%;
  }

  .card_info {
    padding: 1rem;
  }
  
  .bg_desktop {
    display : none
  }
  
  .bg_mobile {
    display : block
  }
}