body {
  font-family: Arial, sans-serif;
  background-color: #ccf7ff;
}

.kaikki {
  background-color: #fff;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding: 10px;
}
 .header {
  background-color: #4fabab;
  max-width: 900px;
  padding: 40px;
  font-size: 30px;
}
.header {
  text-align: center;
}