html,
body {
  margin: 0;
  padding: 0;
}
body,
select {
  font-family: 'Arial Narrow', 'Liberation Sans Narrow', Arial, sans-serif;
  font-weight: 400;
  font-size: 16px;
}
b {
  font-weight: 700;
}
#logo {
  position: absolute;
  top: 10px;
  left: 292px;
  width: 216px;
}
#container {
  position: relative;
  margin: 0 auto;
  width: 800px;
}
#canvas {
  margin: 0 auto;
  width: 800px;
  height: 430px;
}
#panel {
  position: absolute;
  width: 200px;
  top: 10px;
  right: 0px;
  padding: 0px;
}
#goal {
  height: 120px;
  width: 100%;
}
#levels {
  width: 100%;
  margin: 4px 0 15px 0;
  padding: 3px 0px;
  font-size: 16px;
  background-color: #fff;
  border: 1px solid #ccc;
  border-bottom: 1px solid #aaa;
  border-radius: 3px;
  outline: none;
}
#help {
  font-size: 14px;
  margin-top: 0;
}
#message {
  visibility: hidden;
  position: absolute;
  top: 310px;
  left: 50px;
  padding: 1px;
}
#message #solved {
  font-size: 24px;
  font-weight: 700;
}
#controls {
  overflow: hidden;
}
.controlBox {
  text-align: center;
  float: left;
}
.left {
  margin-left: 120px;
}
.right {
  margin-left: 80px;
}
.sortable {
  margin: 0;
  width: 240px;
  min-height: 100px;
  padding: 7px 0 30px 0;
  list-style-type: none;
  border-radius: 5px;
  border: 1px solid #ccc;
}
#program:empty::after {
  content: "Drop functions here";
  font-weight: bold;
  color: #ccc;
}
#available:empty::after {
  content: "No functions available";
  font-weight: bold;
  color: #ccc;
}
.transformer {
  display: inline-block;
  padding: 1px 4px;
  margin: 0;
  background-color: #eee;
  border-bottom: 1px solid #a2a2a2;
  border-radius: 5px;
}
.sortable li {
  width: 214px;
  line-height: 24px;
  margin: 0px auto 7px auto;
  padding: 2px 7px 2px 7px;
  background-color: #eee;
  border-bottom: 1px solid #a2a2a2;
  border-radius: 5px;
  cursor: move;
}
li.sortable-ghost {
  opacity: 0.4;
}
.buttons {
  margin: 5px 0;
}
.button {
  cursor: pointer;
  color: #000;
  font-size: 14px;
  text-decoration: none;
  background-color: #f0f0f0;
  padding: 2px 5px;
  border: 1px solid #666;
  border-bottom: 1px solid #000;
  border-radius: 3px;
}
.button:hover {
  background-color: #d7d7d7;
}
p.footer {
  margin-top: 30px;
  font-size: 14px;
  text-align: center;
  color: #444;
}
a {
  color: #CC333F;
}
.cube {
  display: inline-block;
  vertical-align: middle;
  width: 11px;
  height: 11px;
  margin: 0 1px;
  border: 1px solid #444;
  border-radius: 3px;
}
.stack {
  font-size: 0;
  line-height: 2px;
  display: inline-block;
  vertical-align: middle;
  width: 15px;
}
.stack .cube {
  width: 9px;
  height: 9px;
  vertical-align: baseline;
}
.X {
  background-color: #fff;
  border: 1px dotted #222;
}
.Cyan {
  background-color: #00A0B0;
}
.Brown {
  background-color: #6A4A3C;
}
.Red {
  background-color: #CC333F;
}
.Orange {
  background-color: #EB6841;
}
.Yellow {
  background-color: #EDC951;
}
@media (max-width: 839px) {
  body {
    overflow-x: hidden;
  }
  #container {
    width: 100%;
  }
  #logo {
    position: relative;
    top: auto;
    left: auto;
    margin: 10px auto 8px;
  }
  #panel {
    position: relative;
    top: auto;
    right: auto;
    box-sizing: border-box;
    width: 100%;
    padding: 0 12px;
  }
  #goal {
    height: 90px;
  }
  #canvas {
    display: block;
    width: 100%;
    height: auto;
  }
  #message {
    position: relative;
    top: auto;
    left: auto;
    z-index: 2;
    height: 0;
    padding-left: 12px;
  }
  #controls {
    display: flex;
    gap: 12px;
    overflow: visible;
    padding: 0 12px;
  }
  .controlBox {
    float: none;
    flex: 1 1 0;
    min-width: 0;
  }
  .left,
  .right {
    margin-left: 0;
  }
  .sortable {
    box-sizing: border-box;
    width: 100%;
  }
  .sortable li {
    box-sizing: border-box;
    width: calc(86%);
    min-height: 40px;
    line-height: 34px;
    touch-action: none;
  }
  p.footer {
    padding: 0 12px;
  }
}