* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
nav {
  height: 80px;
  background-color: powderblue;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0rem calc((100vw - 1300px)/2);
}
.logo {
  color: black;
  font-size: larger;
  font-weight: bold;
  font-style: italic;
  padding: 0 2rem;
}
nav a {
  padding: 0 2rem;
  color: black;
}
nav a:hover {
  color: aliceblue;
}
.intro {
  background-color: powderblue;
  height: 76.8rem;
}
.intro-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem calc((100vw - 1300px)/2);
}
.left-column {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  color: black;
  padding: 0rem 2rem;
}
.left-column h1 {
  font-style: italic;
  margin-bottom: 1rem;
  font-size: 3rem;
}
.left-column h3 {
  margin-bottom: 1rem;
  
}
.left-column p {
  margin-bottom: 1rem;
  font-size: 1.5rem;
  line-height: 1.5;
}

.main-page-graphic {
  width: 60%;
  height: 60%;
}

html {font-family: Arial, Helvetica, sans-serif;}

button {
  padding: 1rem 3rem;
  background-color: rgb(100, 148, 199);
  text-emphasis-color: black;
  border: none;
  border-radius: 42px;
  text-align: center;
  font-size: 1rem;
  cursor: pointer;
}
.choice {
  padding: 1rem 3rem;
  background-color: rgb(100, 148, 199);
  text-emphasis-color: black;
  border: none;
  border-radius: 42px;
  width: 20rem;
  text-align: center;
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 1rem;
}
 .right-column {
  display: flex;
  justify-content: left;
  align-items: left;
  padding: 1rem 2rem;
}
 button:hover{
  background-color: aliceblue;
 }
 @media screen and (max-width: 768px) {
  .intro-box{
    grid-template-columns: 1fr;
  }
 }