html {
  font-family: Verdana, serif;
}

body {
  background-color: aliceblue;
  margin: 0 auto;
}

h1 {
  font-size: 3rem;
  margin-bottom: 0;
}

h2 {
  font-weight: normal;
  margin-top: 0;
  font-size: 1.5rem;
}

img {
  border: white solid 4px;
  width: 35vw;
  height: auto;
}

.section {
  width: 100%;
  display: grid;
  grid-template-columns: 50% 50%;
  padding: 40px;
  margin: 0 auto;
  box-sizing: border-box;
}

@media screen and (max-width: 50em) {

  .section {
    grid-template-columns: 100%;
    grid-template-rows: 50% 50%;
  }

  img {
    width: 70vw;
  }

}

section:nth-of-type(1) {
  background-color: lightskyblue;
}

section:nth-of-type(2) {
  background-color: #B5E2FA;
}

section:nth-of-type(3) {
  background-color: #2D5D7B;
  color: white
}

section:nth-of-type(3) a:link {
  color: hotpink;
}

section:nth-of-type(3) a:visited {
  color: mediumpurple;
}

.block {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1.6;
}

.block > p {
  max-width: 60%;
}

.head{
  margin-left: 15vw;
}