body {
  font-family: Lato, Verdana, Arial, Helvetica, sans-serif;
}

h1 {
  text-align: center;
}

p, input {
  font-size: 18px;
}

.container {
  display: grid;
  text-align: center;
  align-items: center;
  place-items: center;

  grid-template-columns: repeat(3, 1fr);
}

.container > input {
  width: 20%;
}

input[type = text] {
  padding: 6px;
  font-size: 18px;
  text-align: center;
  font-family: Lato, Verdana, Arial, Helvetica, sans-serif;
}

button[type = button] {
  padding: 6px;
  font-size: 18px;
  text-align: center;
  font-family: Lato, Verdana, Arial, Helvetica, sans-serif;

  display: block;
}

.center {
  display: flex;
  justify-content: center;
  place-items: center;
}

.result {
  display: grid;
  text-align: center;
  align-items: center;
  place-items: center;

  grid-template-columns: repeat(2, 1fr);
}