header {
  background-color: #F4F4F4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0px;
}

footer {
  background-color: #F4F4F4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
}

main {
  padding: 20px;
  margin: 20px;
}