body {
  margin: 0;
  font-family: Georgia, sans-serif;
  background: orange;
}
body h1 {
  margin: 0;
  padding: 1em 0;
  text-align: center;
  background: steelblue;
  color: lightcyan;
  text-shadow: 0.2em 0.2em 0 rgba(0, 0, 0, 0.2);
}
body button {
  padding: 1em;
  font: inherit;
}
body footer {
  padding: 2em 1em;
  background: orangered;
  color: lightgoldenrodyellow;
}
body footer a {
  color: gold;
}

#app {
  text-align: center;
  padding: 0.5em 0;
  background: aliceblue;
}
#app .group {
  display: inline-block;
  vertical-align: top;
  margin: 0.5em 0.8em;
}
#app .group button {
  display: block;
  margin: auto;
  margin-bottom: 0.5em;
}
#app .image-container {
  position: relative;
  display: inline-block;
  background: white;
}
#app .image-container .draw-area {
  text-align: left;
  overflow: hidden;
}
#app .image-container input {
  position: absolute;
  z-index: -1;
  opacity: 0;
  width: 0;
}
#app .image-container input + span {
  position: relative;
  display: block;
  padding: 0.5em;
  box-sizing: border-box;
  background: purple;
  color: white;
  cursor: pointer;
}
#app .image-container input:focus + span, #app .image-container input:active + span,
#app .image-container input + span:hover {
  background: darkviolet;
  outline: 2px solid violet;
}
#app #morph {
  position: relative;
  display: table;
}
#app #morph canvas {
  background: white;
}
#app #morph canvas + canvas {
  position: absolute;
  top: 0;
  left: 0;
}
#app .image-container, #app #morph {
  box-shadow: 0 0 0 1px paleturquoise;
}
#app svg {
  position: absolute;
  top: 0;
  left: 0;
}
#app svg .connector {
  stroke: rgba(30, 144, 255, 0.5);
  stroke-width: 1;
  stroke-dasharray: 2;
  pointer-events: none;
}
#app svg [data-draggable] {
  stroke: black;
  fill: rgba(255, 255, 255, 0.2);
  fill: url(#point-grad);
  cursor: move;
}
#app svg [data-draggable].selected {
  fill: rgba(255, 255, 0, 0.5);
}
#app pre {
  flex: 1 1 auto;
  margin: 0.5em 1em;
  background: white;
  color: #888;
  border: 1px solid gainsboro;
  overflow: auto;
}