.s_pdf_download_link,
.s_pdf_download_link:hover{
  text-decoration: none;
}

.s_pdf_download_bttn{
  display: block;
  padding: 5px 20px;
  background: #333;
  color: #fff;
  font-size: 18px;
  margin-top: 20px;
  border: 2px solid transparent;
  transition: all ease .25s;
  -webkit-transition: all ease .25s;
}

.s_pdf_download_bttn:hover{
  background: #fff;
  border: 2px solid #333;
  color: #333;
}