html, body {
  width:  100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

html {
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

.allow-mic {
  display: none;

  background-color: transparent;
}

.allow-mic--active {
  display: block;
}

.allow-mic__arrow {
  position: absolute;
  left: 408px;
  top: 60px;
  width: 60px;
  height: 72px;

  background-image: url("../img/allow_mic_arrow.png");
  background-size: cover;
}

.allow-mic__message {
  position: absolute;
  width: 250px;
  left: 330px;
  top: 140px;

  font-family: 'Kalam', cursive;
  font-size: 24px;
  color: #F1FAEE;
}

.header {
  display: flex;
  align-items: center;
  height: 60px;
}

.header__audio-wave {
  position: absolute;
  top: 2px;
  left: 10px;
}

.header__score {
  display: none;
  position: absolute;
  top: 20px;
  right: 40px;

  font-size: 32px;
  line-height: 48px;
  font-weight: bold;
  color: #A8DADC;
}

.real-guitar-hero {
  background-color: #1D3557;
}

.real-guitar-hero__header {
  position: absolute;
}

.real-guitar-hero__canvas {
}

.real-guitar-hero__settings {
  display: block;
  position: absolute;
  top: 10px;
  right: 10px;

  font-family: 'Source Sans Pro', sans-serif;
  font-weight: bold;
  color: #F1FAEE;
  text-decoration: none;
}

.game-settings {
  width: 100%;
}


.game-settings__bpm-input-label {
  display: block;

  font-family: 'Source Sans Pro', sans-serif;
  font-weight: bold;
  color: #1D3557;
  text-decoration: none;
}

.game-settings__bpm-input {
  display: block;
  padding: 8px;
  width: 100%;

  font-size: 24px;
  line-height: 32px;
}

.game-settings__song-select-label,
.game-settings__string-select-label,
.game-settings__mode-select-label {
  display: block;
  margin-top: 16px;

  font-family: 'Source Sans Pro', sans-serif;
  font-weight: bold;
  color: #1D3557;
  text-decoration: none;
}

.game-settings__song-select,
.game-settings__string-select {
  display: block;
  width: 100%;
  height: 52px;

  background-color: #FFF;

  font-family: 'Source Sans Pro', sans-serif;
  color: #1D3557;
  text-decoration: none;
  font-size: 18px;
  line-height: 24px;
}

.game-settings__mode-select {
  font-family: 'Source Sans Pro', sans-serif;
  color: #1D3557;
  text-decoration: none;
  font-size: 18px;
  line-height: 24px;
}

.game-settings__mode-select-hint {
  font-size: 14px;
  line-height: 14px;
}

.game-settings__mode-select-item + .game-settings__mode-select-item {
  margin-top: 10px;
}

.real-guitar-hero__score {
  font-size: 24px;
  color: #0654C8;
}

.sidebar-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 20px;
  position: absolute;
  width: 400px;
  height: 100%;
  top: 0;
  right: 0;
  z-index: 100;

  background-color: #E4EEFB;
}

.sidebar-menu--active {
  display: flex;
}

.sidebar-menu__footer {
  text-align: right;
}

.footer-link {
  font-family: 'Source Sans Pro', sans-serif;
  font-size: 16px;
  line-height: 20px;
  color: #1D3557;
  text-decoration: none;
}

.sidebar-menu__footer a + a {
  margin-left: 15px;
}

.sidebar-menu__header {
  margin: 0;
  padding: 0;

  font-family: 'Source Sans Pro', sans-serif;
  font-size: 24px;
  line-height: 32px;
  color: #1D3557;
}

.sidebar-menu__subheader {
  margin-top: 20px;

  font-family: 'Source Sans Pro', sans-serif;
  font-size: 16px;
  line-height: 20px;
  color: #1D3557;
}

.sidebar-menu__settings {
  margin-top: 20px;
}

.sidebar-menu__start-button {
  margin: 50px auto 0;
  display: block;
  width: 350px;
  padding: 20px 25px;

  border: none;
  border-radius: 2px;

  background-color: #7C69F4;

  font-family: 'Source Sans Pro', sans-serif;
  font-weight: bold;
  font-size: 24px;
  line-height: 32px;
  color: #FFF;
  letter-spacing: 4px;

  outline: none;
  cursor: pointer;
}

.sidebar-menu__start-button:hover {
  opacity: 0.9;
}

.sidebar-menu__install-chrome,
.sidebar-menu__update-chrome {
  display: none;
  margin-top: 10px;

  font-family: 'Source Sans Pro', sans-serif;
  font-size: 16px;
  line-height: 20px;
  color: #1D3557;
}

.sidebar-menu__install-chrome--active,
.sidebar-menu__update-chrome--active {
  display: block;
}

.sidebar-menu__install-chrome i,
.sidebar-menu__update-chrome i {
  color: red;
}

.sidebar-menu__install-chrome a,
.sidebar-menu__update-chrome a {
  font-weight: bold;
  text-decoration: none;
}

.sidebar-menu__install-chrome a:hover,
.sidebar-menu__update-chrome a:hover {
  text-decoration: underline;
}

.sidebar-menu__sharing-buttons {
  display: flex;
  margin-top: 20px;
  align-items: center;
  justify-content: center;
}

.sharing-buttons {
  display: flex;
  margin-bottom: 20px;
}

.share-button {
  display: inline-block;
  padding: 10px 15px;

  border-radius: 2px;

  font-family: 'Source Sans Pro', sans-serif;
  font-size: 16px;
  line-height: 20px;
  color: #F1FAEE;
  text-decoration: none;
}

.share-button:hover {
  opacity: 0.9;
}

.share-button i {
  margin-right: 4px;
}

.share-button + .share-button {
  margin-left: 8px;
}

.share-button--fb {
  background-color: #3b5998;
}

.share-button--tw {
  background-color: #4099FF;
}

.audio-wave {
  display: none;

  width: 60px;
  height: 32px;
}

.audio-wave--active {
  display: block;
}

.audio-wave path {
  stroke: #F1FAEE;
  stroke-width: 1;
  fill: none;
  opacity: 0.5;
}

.no-sound {
  display: none;
  padding-top: 8px;

  color: white;
  font-size: 30px;
}

.no-sound--active {
  display: block;
}

.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}