It’s difficult to create a site that looks great across browsers. The weaker web developers simply give up – supporting only a piece of the market, squandering opportunity for themselves or their customers.
But, now the ante is raised with responsive web design. Leveraging CSS media queries, developers rearrange content to accommodate the width (et al) of different screen sizes. And it’s not simply a normal site with a mobile site, too. Users are coming at you with a myriad screen sizes.