.btn_bootstrap._primary:not(._fill){color:#007bff}
.btn_bootstrap._primary._fill{background-color:#007bff}
.btn_bootstrap._secondary:not(._fill){color:#6c757d}
.btn_bootstrap._secondary._fill{background-color:#6c757d}
.btn_bootstrap._warning:not(._fill){color:#ffc107}
.btn_bootstrap._warning._fill{background-color:#ffc107}
.btn_bootstrap._success:not(._fill){color:#28a745}
.btn_bootstrap._success._fill{background-color:#28a745}
.btn_bootstrap._danger:not(._fill){color:#dc3545}
.btn_bootstrap._danger._fill{background-color:#dc3545}
.btn_bootstrap{font-size:1rem;border-radius:.25rem;text-transform:capitalize;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol"}
.btn_bootstrap._large{height:48px;padding:.5rem 1rem;border-radius:.3rem}
.btn_bootstrap._small{height:32px;padding:.25rem .5rem;font-size:.75rem;border-radius:.2rem}