h1 {
  font-size: x-large;
  font-weight: bold;
}

body {
  text-align: center;
  background-color: #FFFACD;
  font-size: large;
}

#problemo {
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  font-size: xx-large;
}

foot {
  position: absolute;
  bottom: 25px;
  left: 200px;
  text-align: center;
}