* {
  box-sizing: border-box;
}

body {
  width: 500px;
  margin: 2rem auto;
}

button,
select {
  padding: 5px;
}

html {
  font-family: Arial, Helvetica, sans-serif;
  height: 100%;
}

.sample-text {
  line-height: 1.5;
  font-size: 2rem;
}