Jenkins Infrastructure : Placing site wide banner

JIRA

System > User Interface > Announcement

<style>
  #announcement-banner { padding: 0px !important }
  #juc-sf {
    text-align: center;
    background-image: url('https://www.cloudbees.com/sites/all/themes/custom/cloudbees_zen/images/golden-gate.png');
    background-position: bottom right;
    background-repeat: no-repeat;
    padding: 20px 10px 20px 10px;
    
    font-size: 25px;
    font-weight: bold;
  }
</style>
<div id='juc-sf'>
    Join the <a href="http://www.cloudbees.com/jenkins-user-conference-2012-san-francisco.cb" style="color:#D24939">Jenkins User Conference in San Francisco</a> on September 30th!
</div>

Another image only version:

<style>
  #announcement-banner { padding: 0px !important }
  #juc-banner {
    border: 1px solid black;
    text-align: center;
    background-image: url('http://jenkins-ci.org/sites/default/files/images/juc2014-banner-left.png');
    background-color: black;
    background-position: bottom left;
    background-repeat: no-repeat;
  }
  #juc-banner A {
    display: block;
    width: 100%;
    height: 90px;
    background-image: url('http://jenkins-ci.org/sites/default/files/images/juc2014-banner-right.png');
    background-position: bottom right;
    background-repeat: no-repeat;
  }
</style>
<div id='juc-banner'>
<a href="http://www.cloudbees.com/jenkins/juc-2014"></a>
</div>

Wiki

Look and feel > Custom HTML

<style>
  #juc-sf-wikibox {
    border: 1px solid #9EB6D4;
    background-color: #E0EFFF;
  }
  #juc-sf {
    text-align: center;
    background-image: url('https://www.cloudbees.com/sites/all/themes/custom/cloudbees_zen/images/golden-gate.png');
    background-position: bottom right;
    background-repeat: no-repeat;
    padding: 20px 10px 20px 10px;
    
    font-size: 25px;
    font-weight: bold;
  }
</style>
<div id='juc-sf-wikibox'>
<div id='juc-sf'>
  Join the <a href="http://www.cloudbees.com/jenkins-user-conference-2012-san-francisco.cb" style="color:#D24939">Jenkins User Conference in San Francisco</a> on September 30th!
</div>
</div>

Image only flavor:

<style>
  #juc-banner {
    border: 1px solid black;
    text-align: center;
    background-image: url('http://jenkins-ci.org/sites/default/files/images/juc2014-banner-left.png');
    background-color: black;
    background-position: bottom left;
    background-repeat: no-repeat;
  }
  #juc-banner A {
    display: block;
    width: 100%;
    height: 90px;
    background-image: url('http://jenkins-ci.org/sites/default/files/images/juc2014-banner-right.png');
    background-position: bottom right;
    background-repeat: no-repeat;
  }
</style>
<div id='juc-banner'>
<a href="http://www.cloudbees.com/jenkins/juc-2014"></a>
</div>

Drupal

Ressurect "site-wide banner" from http://jenkins-ci.org/admin/build/block in the "middle" area.

<style>
  #middle {
    background-color: inherit !important;
    background-image: url('https://www.cloudbees.com/sites/all/themes/custom/cloudbees_zen/images/golden-gate.png');
    background-position: bottom right;
    background-repeat: no-repeat;
  }
  #juc-sf-wikibox {
  }
  #juc-sf {
    text-align: center;
    padding: 20px 10px 20px 10px;
    
    font-size: 20px;
    font-weight: bold;
  }
</style>
<div id='juc-sf-wikibox'>
<div id='juc-sf'>
  Join the <a href="http://www.cloudbees.com/jenkins-user-conference-2012-san-francisco.cb" style="color:#D24939">Jenkins User Conference in San Francisco</a> on September 30th!
</div>
</div>

Image only version:

<style>
  #middle { padding: 0px !important; width: 940px !important; }
  #juc-banner {
    border: 1px solid black;
    text-align: center;
    background-image: url('http://jenkins-ci.org/sites/default/files/images/juc2014-banner-left.png');
    background-color: black;
    background-position: bottom left;
    background-repeat: no-repeat;
  }
  #juc-banner A {
    display: block;
    width: 100%;
    height: 90px;
    background-image: url('http://jenkins-ci.org/sites/default/files/images/juc2014-banner-right.png');
    background-position: bottom right;
    background-repeat: no-repeat;
  }
</style>
<div id='juc-banner'>
<a href="http://www.cloudbees.com/jenkins/juc-2014"></a>
</div>