Александр Миранович

ul {
margin: 30px 0 0 20px;
padding: 0;
}

$(document).ready(function(){
  $('.language .head').click(function() {
    $(this).closest('.language').find('ul').stop().slideToggle();
  });
});

<div class="language">
  <span class="head">Ru</span>
  <ul>
    <li><a href="http://exemple.com/">Ru</a></li>
    <li><a href="http://exemple.com/en/">En</a></li>
  </ul>
</div>

.language {
    display: inline-block;
    position: relative;
}
    content: '';
    width: 0;
    height: 0;
    border: 5px solid transparent;
        border-top-color: transparent;
        border-top-style: solid;
        border-top-width: 5px;
        border-bottom-color: transparent;
        border-bottom-style: solid;
        border-bottom-width: 5px;
    border-bottom: none;
    border-top: 5px solid #FFF;
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
}
.language .head {
    padding: 5px 25px 5px 15px;
    color: #FFF;
    background: #000;
}
.language ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #000;
}
.language ul li a {
    display: block;
    color: #FFF;
    padding: 5px 15px;
}