body {
  background-color: blueviolet;
  color: #000000;
  font-family: arial;
}

header {
  color: #ffffff;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #ffff99;
}

th, td {
  padding: 11px;
}

button {
  margin: 5px;
}

footer {
	color: #ffffff;
	clear: both;
}