.demo {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  background-color: #fff;
  border-radius: 8px;
  overflow: hidden;
  margin-top: 8px;
  .canvas {
    min-height: 300px;
    min-width: 200px;
    flex: 1;
  }
  .code {
    flex: 1;
  }
  .upload-button {
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    cursor: pointer;
    padding: 0 4px;
    line-height: 20px;
    font-size: 10px;
    background-color: white;
    border-radius: 6px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 1px 1px 3px 0px rgba(0, 0, 0, 0.04);
    margin: 0 4px;
    &:hover {
      color: gray;
    }
  }
}