bootstrap 4 centrum div
<div class="d-flex justify-content-start">...</div>
<div class="d-flex justify-content-end">...</div>
<div class="d-flex justify-content-center">...</div>
<div class="d-flex justify-content-between">...</div>
<div class="d-flex justify-content-around">...</div>
bootstrap center zarovnať stĺpce
<!-- Center columns in a Row -->
<div class="row d-flex justify-content-center text-center">
<div class="col-4">
// Add Content
</div>
<div class="col-4">
// Add Content
</div>
<div class="col-4">
// Add Content
</div>
</div>
HTML center obrázok vertikálne bootstrap
mx-auto mt-auto mb-auto
ako vertikálne centrovať v bootstrap col
<div class="my-auto">
...inner divs and content...
</div>
vertikálne centrum bootstrap div
<div class="jumbotron d-flex align-items-center min-vh-100">
<div class="container text-center">
I am centered vertically
</div>
</div>