There are plenty of opinions about organizing markup, but the W3C is the predominant authority in such matters. When referring to the proper position of
script tags, the latest W3C content is a bit vague.
Another small performance gain that designers and developers should employ is specifying their image width and height. This article explains why setting the dimensions of your images helps you and the theory behind it. See the best practice.
Popovers are useful for tooltips, notes, or other short messages. Bootstrap does a good job of its native popover tooltip, but needs a bit of help to work with a mobile device (since they don’t have hover). Cover all your bases
Embedding PDFs or other content into websites and web apps has become commonplace. Inevitably you will want to have menus that drop down over those PDFs or have some other element that can overlay the iframe that you place the PDF in.
Most browsers understand this desire and are happy to accommodate. Unfortunately, Internet Explorer in its many versions still does not handle this. Get the easy fix
Turbotax has changed their discounts for 2014 (2013 tax returns). Instead of the traditional 35% off label, Intuit is now offering a tiered discount of $10, $15, and $20 on their TurboTax online products.
With Twitter Bootstrap modals in either version 2 or 3, you can easily prevent the modal window from being closed with the escape key or by clicking on the black backdrop outside the window. see the code