margin: 0;

  padding: 0;

}

canvas {

  display: block;

}

​

input {

  -webkit-appearance: none;

  width: 100%;

  height: 15px;

  border-radius: 5px;  

  background: #d3d3d3;

  outline: none;

  opacity: 0.7;

  -webkit-transition: .2s;

  transition: opacity .2s;

}