* { box-sizing: border-box }
html,body { margin: 0; padding: 0; width: 100%; height: 100%; font-family: 'Helvetica', sans-serif; font-weight: 300; }
body {
  background: linear-gradient(52deg, #fde, #ffe);
}
header {
  position: fixed;
  bottom: 10px;
  left: 10px;
  background: white;
  padding: 10px;
}
#container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%; height: 100%;
}
.app {
  display: flex;
  flex-direction: column;
}
.player {
  width: 100%;
  height: 30vh;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.player img, .player canvas {
  width: 48vh;
  height: 30vh;  
}
.params {
  font-size: 10px;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
}
.paramGroup {
  background: rgba(255,255,255,0.2);
  padding-right: 10px;
}
.paramGroup.inactive {
  opacity: 0.4;
}
.paramGroup > label {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  padding: 2px 0;
  margin-bottom: 3px;
}
.paramGroup h3 {
  margin: 0; padding: 0;
}
.slider {
  margin-bottom: 3px;
}
.slider input[type=text] {
  width: 34px;
  border: 1px solid transparent;
  margin-right: 5px;
}
.slider input[type=text]:focus {
  border: 1px solid #ddd; background: white;
}
.slider {
  display: flex;
  flex-direction: row;
}
.slider > label {
  display: flex;
  justify-content: space-between;
  width: 120px;
  text-align: right;
}