:root {
  --cyan: #2ab2af;
  --bright-yellow: #c0df34;
  --light-gray: #e5eff5;
  --grayish-blue: #98a6bd;
}

body {
  --fz: 16px;
  font-family: 'Karla', sans-serif;
  font-weight: 400;
  font-size: var(--fz);
  background-color: var(--light-gray);
  padding: 160px 10px 50px;
}

.price {
  max-width: 635px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  grid-template-areas: "header header" "price why";
  background-color: #fff;
  border-radius: 10px;
  overflow: hidden;
  -webkit-box-shadow: 0px 10px 26px 0px rgba(152, 166, 189, 0.8);
          box-shadow: 0px 10px 26px 0px rgba(152, 166, 189, 0.8);
}
.price__grid-item {
  padding: 40px;
}
.price__header {
  grid-area: header;
}
.price__title {
  font-weight: 700;
  color: var(--cyan);
  font-size: 1.5em;
  margin-bottom: 15px;
}
.price__guarantee {
  font-weight: 700;
  font-size: 1.1em;
  color: var(--bright-yellow);
  margin-bottom: 10px;
}
.price__text {
  color: var(--grayish-blue);
}
.price__offer {
  grid-area: price;
  background-color: var(--cyan);
  color: #fff;
}
.price__offer-title, .price__why-title {
  font-weight: 700;
  font-size: 1.1em;
  margin-bottom: 10px;
}
.price__offer-num {
  font-weight: 700;
  font-size: 2em;
}
.price__offer-num span {
  font-weight: 400;
  font-size: var(--fz);
  vertical-align: 23%;
  color: var(--light-gray);
}
.price__offer-text {
  margin-bottom: 25px;
}
.price__offer-btn {
  display: block;
  font-weight: 700;
  text-decoration: none;
  color: inherit;
  text-align: center;
  padding: 13px 0;
  background-color: var(--bright-yellow);
  border-radius: 8px;
  -webkit-box-shadow: 0px 10px 26px 0px rgba(51, 86, 56, 0.5);
          box-shadow: 0px 10px 26px 0px rgba(51, 86, 56, 0.5);
}
.price__why {
  grid-area: why;
  background-color: #4abebd;
  color: #fff;
}
.price__why-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9em;
}

@media (max-width: 600px) {
  body {
    padding: 70px 10px 50px;
  }

  .price {
    max-width: 310px;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    grid-template-areas: "header" "price" "why";
    border-radius: 5px;
  }
  .price__grid-item {
    padding: 25px;
  }
  .price__title {
    font-size: 1.2em;
    margin-bottom: 20px;
  }
  .price__guarantee {
    font-size: .9em;
    margin-bottom: 20px;
  }
  .price__text {
    font-size: 0.9em;
    line-height: 1.7;
  }
}