body {
  margin: 0px;
  font-family: Verdana;
  font-size: 16px;
  color: #000;
  background-color: #FFF;
  text-align: center;

  display: flex;
  align-items: center;

  position: absolute;
  width: 100%;
  height: 100%;
}

div.tudo {
  width: 50%;
  flex: 1;
}