.button_silver {
  background-image: linear-gradient(#4f4f4f, #131313);
background-repeat:repeat-x;  
  
  margin:0 10px;
  padding:10px 15px;
  color: white;
  font-size:14px;

  border:none;
  outline:none;
}

.button_silver:hover {
  	background-image: linear-gradient(#184BB0, #133984);
	background-repeat:repeat-x;
}