title: align text vertically over image with flex?
body: <p>I want to align text vertically over an image with flex. Is that possible? Text need to be one below another...
  <a href="https://jsfiddle.net/e3x8dw1d/" rel="nofollow noreferrer">https://jsfiddle.net/e3x8dw1d/</a>
  This is my fiddle.</p>
  
  <pre><code>&lt;div class="advertisement"&gt;
      &lt;img src="http://opusteno.rs/slike/desktop-pozadine/21289/slike-lava-desktop-t01.jpg" /&gt;
              &lt;div class="advertisment_text"&gt;
                  &lt;div class="advertisement_title"&gt;Your ad can be here&lt;/div&gt;
                  &lt;div class="advertisment_subtitle"&gt;ADVERTISE WITH &lt;/div&gt;
              &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>