Slate Calm

.btn-slate-calm {
  display: inline-block;
  padding: 12px 26px;
  border: none;
  border-radius: 10px;
  background: #475569;
  color: #f8fafc;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}
.btn-slate-calm:hover {
  background: #334155;
}
.btn-slate-calm:active {
  background: #1e293b;
}