feat: github ribbon

web/index.html

@@ -45,6 +45,7 @@
       <input type="submit" id="submit" value="generate" />
     </form>
     <div id="cy"></div>
+    <style>#forkongithub a{background:#000;color:#fff;text-decoration:none;font-family:arial,sans-serif;text-align:center;font-weight:bold;padding:5px 40px;font-size:1rem;line-height:2rem;position:relative;transition:0.5s;}#forkongithub a:hover{background:#c11;color:#fff;}#forkongithub a::before,#forkongithub a::after{content:"";width:100%;display:block;position:absolute;top:1px;left:0;height:1px;background:#fff;}#forkongithub a::after{bottom:1px;top:auto;}@media screen and (min-width:800px){#forkongithub{position:absolute;display:block;top:0;right:0;width:200px;overflow:hidden;height:200px;z-index:9999;}#forkongithub a{width:200px;position:absolute;top:60px;right:-60px;transform:rotate(45deg);-webkit-transform:rotate(45deg);-ms-transform:rotate(45deg);-moz-transform:rotate(45deg);-o-transform:rotate(45deg);box-shadow:0;}}</style><span id="forkongithub"><a href="https://github.com/moul/depviz">Fork me on GitHub</a></span>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/cytoscape/3.10.2/cytoscape.min.js" integrity="sha256-6h61EhH/gL/t32vHghM/70U5k4hiB8XMnMQ2lCYV0k0=" crossorigin="anonymous"></script>
     <script src="https://unpkg.com/cytoscape-node-html-label@1.1.5/dist/cytoscape-node-html-label.min.js"></script>