updated cncf logo and KubeCon china dates (#9782)

assets/sass/_base.sass

@@ -1238,8 +1238,15 @@ $feature-box-div-margin-bottom: 40px
 		&:hover
 			border-color: white
 
-
+// CNCF
-
+#cncf
+	padding-top: 60px
+	padding-bottom: 140px
+	background-color: $light-grey
+	background-image: url(/images/cncf-color.png)
+	background-position: center 100px
+	background-repeat: no-repeat
+	background-size: 300px
 
 // Features
 #features

content/en/_index.html

@@ -48,7 +48,7 @@ cid: home
         <br>
         <br>
         <br>
-        <a href="https://www.lfasiallc.com/events/kubecon-cloudnativecon-china-2018/" button id= "desktopKCButton">Attend KubeCon in Shanghai on Nov. 14-15, 2018</a>
+        <a href="https://www.lfasiallc.com/events/kubecon-cloudnativecon-china-2018/" button id= "desktopKCButton">Attend KubeCon in Shanghai on Nov. 13-15, 2018</a>
         <br>
         <br>
         <br>
@@ -168,7 +168,7 @@ cid: home
         <section id="cncf">
             <main>
         <center>
-        <p>We are a <a href="https://cncf.io/">CNCF</a> graduated project</p>
+        <p style="font-size: 20px">We are a <a href="https://cncf.io/">CNCF</a> graduated project</p>
         </center>
       </main>
   </section>