body {
  font-family: 'Poppins',Helvetica,Arial,Lucida,sans-serif;
  color: #333;
  background: #eee;
  margin: 0;
  padding: 0;
}
#header {
  width: 80%;
  margin: auto;
  display: flex;
  margin-top: 32px;
  justify-content: space-between;
}
#header a {
  display: flex;
  grid-gap: 20px;
  align-items: center;
  color: #0c71c3;
  text-decoration: none;
}
#header a:hover {
  text-decoration: underline;
}
.icon {
  width: 36px;
  height: 36px;
}
#back .icon {
  background: url('back.png') no-repeat center;
}
#download .icon {
  background: url('download.png') no-repeat center;
}
#holder {
  padding: 32px 0 16px 0;
}
.canvas-wrapper {
  margin-bottom: 16px;
}
canvas {
  margin: 0 auto;
  display: block;
}