[add] close cookie consent

mkdocs.yml

@@ -116,6 +116,7 @@ markdown_extensions:
 extra_css:
   - assets/stylesheets/extra.css
   - assets/stylesheets/termynal.css
+  - https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css
 
 extra_javascript:
   # 百度的页面访问统计【暂时移除百度的访问统计（加载实在是有点慢】

overrides/partials/content.html

@@ -40,9 +40,10 @@ <h1>{{ page.title | d(config.site_name, true)}}</h1>
 </div>
 
 <!-- cookie -->
-<div class="cookie-message">
+<div class="cookie-message" id="cookie">
   <img src="/assets/images/cookie.png">
   <span>I am using cookies to provide you the best possible experience. But don't panic - I won't share any of your data. You can find more informations about the cookies <a href="/About">here</a>.</span>
+  <a class="close" href="#" onclick="var element = document.getElementById('cookie'); element.parentNode.removeChild(element);"><i class="fa fa-times"></i></a>
 </div>
 
 {% endif %}