Pb hosted2 edits (#2224)

* style sheet update

* Reverting style sheet

* updated hosting page

* added openx

* open x

Co-authored-by: Steve <ssuranie@appnexus.com>

prebid-server/hosted-servers.md

@@ -13,17 +13,22 @@ Several Prebid.org members host Prebid Server clusters for use by publishers.
 
 <div class="container">
   <div class="row">
-    <div class="col-md-4">
+
+    <div class="col-md-3">
       <div style="background-color:#eeeeee; line-height:120px; height:120px; text-align:center; border-top-left-radius:10px; border-top-right-radius:10px;"><img src="/assets/images/logos/magnite-logo-black.svg"></div>
-      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:500px;">Magnite’s Prebid-as-a-service solution makes it easy for large publishers to deploy and control custom header bidding implementations without writing code. The combination of an intuitive UI and on-demand support from our Prebid and yield management experts enables publishers to make faster decisions and potentially capture more revenue. This solution supports display and video ads across desktop and mobile app environments via Prebid.js, Prebid Mobile and Prebid Server. Contact <a href="mailto:sales@magnite.com">sales@magnite.com</a> for more information.</div>
+      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:600px;">Magnite’s Prebid-as-a-service solution makes it easy for large publishers to deploy and control custom header bidding implementations without writing code. The combination of an intuitive UI and on-demand support from our Prebid and yield management experts enables publishers to make faster decisions and potentially capture more revenue. This solution supports display and video ads across desktop and mobile app environments via Prebid.js, Prebid Mobile and Prebid Server. Contact <a href="mailto:sales@magnite.com">sales@magnite.com</a> for more information.</div>
     </div>
-    <div class="col-md-4">
+    <div class="col-md-3">
       <div style="background-color:#eeeeee; line-height:120px; height:120px; text-align:center; border-top-left-radius:10px; border-top-right-radius:10px;"><img src="/assets/images/logos/pubmatic-logo-black.svg"></div>
-      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:500px;">OpenWrap provides a transparent enterprise wrapper solution for Prebid.js and Prebid Server. Manage demand partners and push updates via a cloud-based UI without development resources or code changes. Access powerful reporting and analytics tools for data driven business decisions and dedicated account optimization and technical support teams.<p><a href="https://pubmatic.com/products/header-bidding/">https://pubmatic.com/products/header-bidding/</a></p></div>
+      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:600px;">OpenWrap provides a transparent enterprise wrapper solution for Prebid.js and Prebid Server. Manage demand partners and push updates via a cloud-based UI without development resources or code changes. Access powerful reporting and analytics tools for data driven business decisions and dedicated account optimization and technical support teams.<p><a href="https://pubmatic.com/products/header-bidding/">https://pubmatic.com/products/header-bidding/</a></p></div>
+    </div>
+    <div class="col-md-3">
+      <div style="background-color:#eeeeee; line-height:120px; height:120px; text-align:center; border-top-left-radius:10px; border-top-right-radius:10px;"><img src="/assets/images/logos/openx.png"></div>
+      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:600px;"><a href="prebid@openx.com">Contact OpenX</a> or your account manager for information regarding OpenX's Hosted Prebid Server service&nbsp;</div>
     </div>
-    <div class="col-md-4">
+    <div class="col-md-3">
       <div style="background-color:#eeeeee; line-height:120px; height:120px; text-align:center; border-top-left-radius:10px; border-top-right-radius:10px;"><img src="/assets/images/logos/xandr-logo.svg"></div>
-      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:500px;">Xandr offers a full managed Prebid solution including implementation and maintenance, as well as consulting support for publishers with their own tech resources. Xandr works with users to enable client and/or server-side header bidding across web, AMP, and mobile app channels, and support display, video, and native ad formats. <a href="https://www.appnexus.com/contact">Contact Xandr</a> for more information, and to get a quote!</div>
+      <div style="background-color: #eeeeee; text-align:center; padding:15px 20px 0px 20px; height:600px;">Xandr offers a full managed Prebid solution including implementation and maintenance, as well as consulting support for publishers with their own tech resources. Xandr works with users to enable client and/or server-side header bidding across web, AMP, and mobile app channels, and support display, video, and native ad formats. <a href="https://www.appnexus.com/contact">Contact Xandr</a> for more information, and to get a quote!</div>
     </div>
   </div>