.btnsub {
/* background-color: #4CAF50;*/
  background-color: gray;
  border: none;
  color: white;
  padding: 4px 10px;
  text-align: center;
  font-size: 12px;
  margin: 2px 1px;
  transition: 0.3s;
}

.btnsub:hover {
/*background-color: #4691A4;*/
  background-color: silver;
  color: white;
}