.sf-button {
  background-color: #1a7dcf; 
  border: 2px solid #1a7dcf;
  color: white;
  padding: 10px 3.5em;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 20px;
  margin: 4px 2px;
  -webkit-transition-duration: 0.4s; /* Safari */
  transition-duration: 0.4s;
  cursor: pointer;
   border-radius: 10px;
}


.sf-button:hover {
  background-color: #0d4e98;
   border: 2px solid #0d4e98;
  color: white;
   box-shadow: 0 0 12px RGBA(0,0,0,0.4);
}