body {
  background: #f5f5f5;
  margin: 0;
  padding: 0;
  font-family: "Lucinda Grande", "Lucinda Sans Unicode", Helvetica, Arial, Verdana, sans-serif;
  font-size: 14px;
  line-height: 24px;
}

h1 {
  font-size: 18px;
  line-height: 30px;
  padding: 0;
  margin: 0;
}

canvas {
  background: #fff;
}

#wrapper {
  max-width: 800px;
  margin: 40px auto;
}

#operations {
  padding: 10px 0;
}

#operations button {
  background: #09f;
  color: #fff;
  font-size: 14px;
  padding: 8px 16px;
  border: none;
  cursor: pointer;
  outline: none;
}

#operations button:hover {
  background: #0bf;
}
#operations button:disabled {
  background: #999;
  cursor: default;
}

#info {
  padding: 10px 0;
}

#footer {
  margin: 10px 0;
  font-size: 12px;
  color: #999;
  min-height: 30px;
}

#footer span.ln {
  float: left;
}

#footer span.ln:after {
  content: '|';
  color: #ccc;
  display: inline-block;
  padding: 0 10px;
}

#footer span.ln:last-child:after {
  content: none;
}

@media only screen and (max-width: 800px) {
  h1, #operations, #info, #footer {
    padding-left: 20px;
    padding-right: 20px;
  }
}