title: Background-size: cover on hover zoom transition
body: <p>I want to make zoom effect when user hover link (div) with image background.</p>
  
  <p>I don't know how to do it when i want to zoom only background not text! And i cant find the best way.</p>
  
  <p>Here is a code (doesn't work as i want):</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.light_blue {
    display: block;
    color: #fff;
    background-repeat: no-repeat;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    background-position: center;
    width: 100%;
  }
  a.light_blue:hover {
    text-decoration: none;
    color: #fcb428;
  }
  div.wrap {
    height: 33%;
    width: 33%;
    overflow: hidden;
    position: relative;
  }
  .wrap {
    -moz-transition: all .5s;
    -webkit-transition: all .8s;
    transition: all .8s;
    background-position: center center;
  }
  .wrap:hover {
    -webkit-background-size: 120%;
    -moz-background-size: 120%;
    -o-background-size: 120%;
    background-size: 120%;
  }
  .bg_flat {
    position: absolute;
    font-family: "Archivo Narrow";
    background: url(http://hokejfan.pl/hokej2015/kluby/img/black_bg4.png);
    background-size: contain;
    bottom: 0px;
    padding: 5px;
  }
  .bg_naglowek {
    text-transform: uppercase;
    font-size: 29px;
  }
  .bg_flat2 {
    position: absolute;
    background: url(../img/black_bg4.png);
    background-size: contain;
    font-family: "Archivo Narrow";
    bottom: 5px;
    width: -webkit-calc(100% - 10px);
    width: calc(100% - 10px);
    padding: 15px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="col-sm-4" style="padding: 5px;"&gt;
    &lt;a href="#news" class="light_blue wrap" style="background-image: url('http://hokejfan.pl/hokej2015/kluby/static/images2/48b51db749e3d9d992a61d289bc3c535.jpg'); height: 180px;"&gt;
      &lt;div class="bg_flat2"&gt;
        &lt;b class="bg_naglowek"&gt;Hello World&lt;/b&gt;
      &lt;/div&gt;
    &lt;/a&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>