Сергей delphinpro

document.querySelectorAll('a[href^=#]').forEach(link => {
  link.addEventListener('click', e => {
    e.preventDefault();
    //....
  });
})

document.getElementById('output').innerHTML = response.online ? 'Online' : 'Offline';

.my-button {
  --bs-btn-color: ...;
  --bs-btn-bg: ...;
  --bs-btn-border-color: ...;
  --bs-btn-hover-color: ...;
  --bs-btn-hover-bg: ...;
  --bs-btn-hover-border-color: ...;
  --bs-btn-focus-shadow-rgb: ...;
  --bs-btn-active-color: ...;
  --bs-btn-active-bg: ...;
  --bs-btn-active-border-color: ...;
  --bs-btn-active-shadow: ...;
  --bs-btn-disabled-color: ...;
  --bs-btn-disabled-bg: ...;
  --bs-btn-disabled-border-color: ...;
}

<button class="btn my-button">
</button>