<div class="ui one column stackable center aligned page vertically padded grid">
  <div class="twelve wide column" id="mainWelcomeColumn">
    <div id="mainSearch">
      <div class="ui basic center aligned segment">
        <img class="ui medium" src="/images/cooper/cooper_coop_sad.png">
        <div class="ui inverted huge header">
          Oh no! Cooper couldn't find the page you're looking for.
        </div>
      </div>
    </div> 
  </div>
</div>


<div class="ui one column stackable center aligned page vertically padded grid">
  <div class="twelve wide column" id="mainWelcomeColumn">
    <div id="mainSearch">
      <div class="ui basic center aligned segment">
        <img class="ui medium" src="/images/cooper/cooper_coop_sad.svg">
        <div class="ui inverted huge header">
          Oh no! Cooper couldn't find the page you're looking for.
        </div>
      </div>
    </div> 
  </div>
</div>


Use sad cooper svg instead of png
Use sad cooper svg instead of png
