body {
  margin: 0;
  padding: 0;
  font-size: 24px;
}

.hide {
  display: none !important;
}

.active {
  position: relative;
  left: 3px;
  top: 3px;
}

.container {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}

.focusable {
  outline: 0;
  cursor: default;
}

#main-container .button {
  background-color: #ccc;
  border-radius: 30px;
  font-size: 40px;
  width: 60px;
  height: 60px;
  display: inline-block;
  vertical-align: top;
}

#main-container .button span {
  margin-top: 10px;
  display: block;
  text-align: center;
}

#main-container .button:hover {
  background-color: #999;
}

#main-container .button:focus {
  background-color: #333;
  color: white;
}

#button-function-area {
  margin-left: 20px;
  display: inline-block;
  background-color: red;
  background-color: #ccc;
  border-radius: 30px;
}

#upperbox {
  padding: 40px;
}

#middlebox {
  position: relative;
  background-color: #ccc;
  height: 400px;
  margin-top: 40px;
  overflow: hidden;
}

#lowerbox {
  padding-left: 40px;
}

.icon {
  box-sizing: border-box;
  background-color: orange;
  width: 160px;
  height: 160px;
  display: inline-block;
  border-radius: 50%;
  margin: 20px;
  vertical-align: top;
  text-align: center;
  font-size: 100px;
  line-height: 160px;
}

.icon:focus {
  border: 5px solid white;
  line-height: 150px;
}

#settings-container {
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
}

#settings-dialog {
  box-sizing: border-box;
  width: 640px;
  height: 450px;
  background-color: white;
  padding: 20px;
  border-radius: 20px;
}

#settings-dialog h1 {
  margin: 0;
  padding-bottom: 5px;
  border-bottom: 1px solid black;
}

#settings-dialog footer {
  text-align: center;
}

#settings-dialog .button {
  box-sizing: border-box;
  display: inline-block;
  background-color: #ccc;
  color: white;
  padding: 7px 15px;
  border-radius: 24px;
  height: 48px;
  margin: 0 15px;
}

#settings-dialog .button:focus {
  background-color: blue;
}

#option-area {
  margin: 1em;
}

#option-area .focusable {
  border: 2px solid white;
  padding: 5px 10px;
}

#option-area .focusable:focus {
  border: 2px solid red;
}

#option-area .fa {
  width: 1.4em;
  text-align: center;
}

#option-area .fa-check {
  color: blue;
}