.doc {
  &-demo-preview {
    height: 667px;
    width: 375px;
    position: fixed;
    right: 30px;
    top: 100px;
    box-shadow: #ebedf0 0 4px 12px;
    border-radius: 12px;
    overflow: hidden;
    &.fixed {
      position: fixed;
      top: 120px;
    }
    iframe {
      // height: calc(100% - 40px);
      height: 100%;
      width: 100%;
    }
  }
}
