.btn-primary, .btn-primary.disabled, .btn-primary:disabled {
  background: radial-gradient(ellipse at top, #3daee9, transparent), radial-gradient(ellipse at bottom, #232629, transparent);
  border-bottom-color: #9ed6ff;
  border-right-color: #9ed6ff;
}

.btn-primary:hover {
  background-color: #205e7d;
  border-bottom-color: #1d99f3;
  border-right-color: #1d99f3;
}