/* style.css */

html, body {
  height: 100%;
  align-items: center;
  text-align: middle;
  display: block;
}

body, button {
  margin: 0;
  display: flex;

  /* This centers our sketch horizontally. */
  justify-content: center;

  /* This centers our sketch vertically. */
  align-items: center;
  text-align: middle;
  display: block;
}

.aligncenter {
    text-align: center;
}

#demobox {
  background-color: #cfc ;
}