/* RESET */
* {
  cursor: default;
  margin: 0;
  padding: 0;
  box-sizing: border-box; }

html {
  font-family: Verdana, Geneva, sans-serif;
  font-weight: normal;
  font-size: 62.5%; }

body {
  background: white;
  color: black;
  font-size: 1.6rem; }

input[type=checkbox] {
  vertical-align: middle; }

fieldset {
  margin-top: 1.6rem;
  padding: 0.8rem; }

/* WORLD */
.world {
  position: relative;
  /* Usable area on an iPhone 4 is 320x372 pixels */
  width: 32rem;
  margin: 0 auto;
  padding: 5px;
  overflow: hidden; }

/* KEYBOARD */
.keyboard {
  position: relative;
  display: inline-block;
  width: 100%;
  padding-top: 0;
  border: none;
  text-align: center; }

.keyboard > button {
  display: inline-block;
  border: none;
  padding: 0;
  margin: 0;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
  -webkit-appearance: none;
  -moz-appearance: none; }

/* https://codepen.io/garypaul/pen/jgKqc */
.keyboard > .white,
.keyboard > .black {
  text-transform: uppercase;
  font-size: 1.6rem;
  line-height: 1.6rem;
  border: 1px solid #555555;
  border-radius: 0 0 5px 5px;
  box-shadow: 0 5px 5px rgba(0, 0, 0, 0.3);
  position: relative;
  background: white;
  color: transparent; }
  .keyboard > .white:hover,
  .keyboard > .black:hover {
    color: #555555; }
  .keyboard > .white:focus,
  .keyboard > .black:focus {
    color: #555555;
    outline-offset: -4px; }
  .keyboard > .white:active,
  .keyboard > .black:active {
    color: #555555;
    box-shadow: none; }

.keyboard > .white {
  z-index: 1;
  width: 4rem;
  padding: 14rem 0 3rem; }

.keyboard > .black {
  z-index: 2;
  width: 3rem;
  padding: 9rem 0 1rem;
  font-size: 1.2rem;
  position: absolute;
  top: 0;
  margin-left: -1.5rem;
  background: #050709; }
  .keyboard > .black:hover {
    color: white; }
  .keyboard > .black:focus {
    color: white;
    outline-offset: 0; }
  .keyboard > .black:active {
    color: white; }

/* CONTROLS */
.beat-choice {
  font-size: 1.4rem; }

/* STORY */
h1 {
  margin-top: 1.6rem;
  font-size: 3.2rem;
  text-align: right; }

h2 {
  margin-top: 1.6rem;
  font-size: 2.4rem; }

p {
  margin-top: 1.6rem;
  font-size: 1.2rem; }

/* MEASURE */
.measure {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr; }

.measure > div {
  display: inline-grid;
  justify-items: center;
  align-items: center;
  width: 4.8rem;
  height: 4.8rem;
  text-transform: uppercase; }

/* UTILITY */
.unselectable {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-touch-callout: none; }

/* COLOPHON */
.colophon {
  font-size: .9rem;
  line-height: .9rem;
  text-align: right;
  width: 100%;
  margin-top: 3.2rem;
  margin-bottom: 1.6rem; }

.colophon > a:hover {
  cursor: auto;
  text-decoration: underline; }

abbr[title="and"] {
  font-family: 'Adobe Caslon Pro', 'Baskerville', 'Goudy Old Style', 'Palatino', 'Palatino Linotype', 'Book Antiqua', 'Georgia', 'Times New Roman', 'Times', serif;
  font-style: italic;
  text-decoration: none;
  font-size: 110%;
  cursor: auto;
  /* Prevents `abbr` affecting the `line-height`. */
  line-height: 0;
  position: relative;
  vertical-align: baseline; }

/* SCREEN */
@media only screen and (min-width: 40em) {
  html {
    font-size: 100%; } }