options.css

body {
  padding: 10px;
  font-family: "Roboto", "Arial", sans-serif !important;
}
h1 {
  text-align: center;
  font-size: 30px;
}
h2 {
  font-size: 20px;
}
#languages {
  -webkit-column-count: 4;
}
button#close {
  display: block;
  margin: 18px auto;
}