* {
  box-sizing: border-box;
}
.row {
  display: flex;
  flex-wrap: wrap;
}
body {
  font-family: Arial;
  margin: 0;
}
.main{
  flex: 70%;
  background-color: #f1f1f1;
  padding: 20px;
}

.side {
  flex: 30%;
  background-color: white;
  padding: 20px;
}

.header {
  padding: 60px;
  text-align: center;
  background: #1abc9c;
  color: white;
}

.header h1{
  font-size: 48px;
}

.footer {
  padding: 20px;
  text-align: center;
  background: #ddd;
}

.note {
  font-style: italic;
}

/* Navigaatiopalkki */
.navbar {
  display: flex;
  background-color: #333;
}

.navbar a {
  color: white;
  padding: 14px 20px;
  text-decoration: none;
  text-align: center;
}

.navbar a:hover {
  background-color: #ddd;
  color: black;
}
@media screen and (max-width: 800px){
  .row, .navbar {
    flex-direction: column;
  }
}