/* @import url('http://example.com/example_style.css'); */
<li class="header-button button-3"> 
<a class="button font-size-16" href="https://marento.mx/marento-magazine">
<span id="hs_cos_wrapper_menu_button_" class="hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_icon" style="" data-hs-cos-general-type="widget" data-hs-cos-type="icon"><svg version="1.0" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" width="16" height="16" aria-hidden="true"><g id="Envelope1_layer"><path d="M464 64H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V112c0-26.51-21.49-48-48-48zm0 48v40.805c-22.422 18.259-58.168 46.651-134.587 106.49-16.841 13.247-50.201 45.072-73.413 44.701-23.208.375-56.579-31.459-73.413-44.701C106.18 199.465 70.425 171.067 48 152.805V112h416zM48 400V214.398c22.914 18.251 55.409 43.862 104.938 82.646 21.857 17.205 60.134 55.186 103.062 54.955 42.717.231 80.509-37.199 103.053-54.947 49.528-38.783 82.032-64.401 104.947-82.653V400H48z"></path></g></svg></span>
      
      Contact
    </a>
  </li>
/***********************************************/
/* CSS @imports must be at the top of the file */
/* Add them above this section                 */
/***********************************************/

/*****************************************/
/* Start your style declarations here    */
/*****************************************/