Recently, there are so many web development applications which use web development from scratch but I would suggest that for any application building, if you use HTML and CSS along with JavaScript, it makes the application best. And using Bootstrap is a good option but I would not suggest it so far because once the whole CSS in our hands only when we write the CSS by ourselves. So it's better, it's best to use the Flexbox and layout, Flexbox layout to make our application and later also the changes, to make changes in that to make it more responsive. It's easy when you use Flexbox.
