.btn-group, .input-group, pre{
  margin-top: 10px;
}
.node {
  cursor: move;
  stroke-width: 1.5px;
}
.link {
  fill: none;
  stroke: #BDBDBD;
  stroke-width: 1.5px;
  opacity: 0.4;
  marker-end: url(#end-arrow);
}
.label {
  fill: #CCCCCC;
  font-size: 9px;
  text-anchor: middle;
  cursor: move;
  font-family: Arial;
}
#end-arrow{
  opacity: 0.4;
}
.INPUT{
  fill: #ff6666;
  stroke:  #ff4d4d;
}
.OUTPUT{
  fill : #ff8c66;
  stroke: #ff794d;
}
.LOGISTIC{
  fill: #ffb366;
  stroke: #ffa64d;
}
.TANH{
  fill: #ffd966;
  stroke: #ffd24d;
}
.IDENTITY{
  fill: #ffff66;
  stroke: #ffff4d;
}
.STEP{
  fill: #d9ff66;
  stroke: #d2ff4d;
}
.RELU{
  fill: #b3ff66;
  stroke: #a6ff4d;
}
.SOFTSIGN{
  fill: #8cff66;
  stroke: #79ff4d;
}
.SINUSOID{
  fill: #66ff66;
  stroke: #4dff4d;
}
.GAUSSIAN{
  fill: #66ff8c;
  stroke: #4dff79;
}
.BENT_IDENTITY{
  fill: #66ffd9;
  stroke: #4dffd2;
}
.BIPOLAR{
  fill: #66d9ff;
  stroke: #4dd2ff;
}
.BIPOLAR_SIGMOID{
  fill: #66b3ff;
  stroke: #4da6ff;
}
.HARD_TANH{
  fill: #668cff;
  stroke: #4d79ff;
}
.ABSOLUTE{
  fill: #6666ff;
  stroke: #4d4dff;
}
.GATE{
  fill: #003300;
  stroke: #001a00;
}
.CONSTANT{
  fill: #ff00ff;
  stroke: #e600e6;
}