* {
  box-sizing: border-box;
}

body {
  padding: 0;
  margin: 0;
}

#speakButton {
  display: block;
  width: 150px;
  height: 150px;
  border: 0;
  border-radius: 50%;
  padding: 0.25em 1em;
  margin: 1.5em auto;
  text-align: center;
  color: #fff;
  background: deepskyblue;
  box-shadow: 2px 5px 30px skyblue;

  will-change: transform, filter;
  transition: all 0.3s ease-out;
}
#speakButton .fa {
  font-size: 80px;
  line-height: 150px;
  margin: 0;
  text-shadow: 1px 2px 2px lightgrey;
}
#speakButton:hover {
  transform: scale(0.92);
}
#speakButton:active {
  filter: brightness(0.8);
}
#speakButton:focus {
  outline: 0;
}

.fa {
  display: inline-block;
  font: normal normal normal 14px/1 FontAwesome;
  font-size: 1.3em;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin-left: 10px;
}
.fa-github::before {
  content: "\f09b";
}

.disabled {
  display: none !important;
}

canvas {
  position: absolute;
}

video {
  width: 100%;
  height: auto;
}

iframe {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
}

.responsive-iframe {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding-top: 56.25%;
}