title: HTML5 <a> element not centering
body: <p>For some reason, this <code>&lt;a&gt;</code> tag won't align to the horizontal center. What needs to be done in order to fix this?</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>.button {
   display: inline-block;
   position: relative;
   padding: 10px 60px;
     
   background-color: transparent;
   border: 3px solid black;
   color: black;
    
   text-decoration: none!important;
            text-align: center;
   text-indent: 15px;
  }
  
  .button:before, .button:after {
   content: ' ';
   display: block;
   position: absolute;
   left: 10px;
   top: 52%;
  }
  
  /* box shape  */
  .button:before {
   width: 20px;
   height: 4px;
   border-style: solid;
   border-width: 0 4px 4px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;a href="#" class="button"&gt;demo&lt;/a&gt;</code></pre>
  </div>
  </div>
  </p>