button {
  margin: 0px
}

#frame {
  width: 700px;
  height: 700px;
}

.widget {
  position: absolute;
}

.widget p {
  margin: 10px 0 0 0;
}

#world {
  border: solid 1px;
}

#world canvas {
  background-color: transparent; 
  position: absolute;
  left: 0;
  top: 0;
}

#patchCanvas {
  z-index: 0;
}

#turtleCanvas {
  z-index: 1;
}

.sliderContainer {
  border: solid 1px;
  background-color:#EEEEEE;
  padding:15px;
}