.btn {
    padding: 6px 12px;
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: #0366d6;
    color: white;
}

.btn-secondary {
    background: #e1e4e8;
    color: #222;
}

.btn-danger {
    background: #b00020;
    color: white;
}

.btn-danger:hover {
    background: #8b0018;
}

 
.btn:disabled,
.btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}