*{
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

body{
  background: #ffffff;
  display: flex;
  justify-content: center;
  padding: 40px;
}

.container{
  background: #ffffff;
  width: 600px;
  padding: 20px;
}

/*Header*/
.header{
  background: #60c2ff;
  display: flex;
  justify-content: center;
  gap: 20px;
  padding: 20px;
  margin-bottom: 20px;
}

.nav-item{
  width: 80px;
  height: 30px;
  background: #d9d9d9;
}

/*Grid*/
.grid{
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 150px 150px 150px;
  gap: 20px;
}

/*Base box styling*/
.box{
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight: bold;
  color: #ffffff;
}

/*Individual boxes*/
.box1{ 
  background: #ff6060; 
}
.box2{
  background: #d9d9d9; color: #ffffff;
}
.box3{ 
  background: #60c2ff;
  grid-row: span 3; /*taller box*/
}
.box4{ 
  background: #ffc260;
  grid-column: span 2; /*wider box*/
}
.box5{ 
  background: #60c2ff;
}
.box6{ 
  background: #d9d9d9; color: #ffffff;
}