body
{
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  flex-wrap: none;
  align-items: center;
  box-sizing: border-box;
  padding: 0px;
  margin: 0px;
}
main
{
  width: 90vw;
  height: 90vh;
  display: flex;
  justify-content: center;
  flex-wrap: none;
  align-items: center;
  border: 20px dashed #44AAFF;
  box-sizing: border-box;
}