<script src="https://unpkg.com/vue/dist/vue.js"></script> <script src="https://unpkg.com/element-ui/lib/index.js"></script> <script src="https://unpkg.com/form-making/dist/FormMaking.umd.js"></script> <script src="https://unpkg.com/form-making/public/lib/ace/ace.js"></script> <script> new Vue({ el: '#app' }) </script>

显示如下，无法显示设计器

调试跟踪样式，发现.fm-style *, .fm-style :after, .fm-style :before样式有冲突，如下