make cards a bit prettier

use grid layout to limit width to three, and keep it centered so it isnt ungly

index.html

@@ -15,6 +15,7 @@
         <p>Email: cesium2349@protonmail.com (<a href=./pgp.txt>PGP Key</a>)
        <br>not an exhaustive list of my entire presence on the internet but stuff on this list is definitely me</p>
         
+       <div class=contacts>
         <div class=contact style="background-color: #475276; opacity:1; cursor: auto;">
             <h3>Discord</h3>
             <p>Cesium#5061</p>
@@ -49,6 +50,7 @@
             <p>cesium2349</p>
             <a title="Twitter" href="https://twitter.com/cesium2349"></a>
         </div>
+    </div>
         <p style="clear: left;text-align: center;"><a href="https://github.com/CesiumCs/cesium.one"><img src="assets/GitHub-Mark-Light.png" style="width:2em" alt="View on GitHub"></a></p>
     </body>
 </html>