Google AMP(Accelerated Mobile Pages) is an Open source Project to deliver very fast websites. Designing Google AMP websites is similar to Simple HTML with some Advantages and Limitations. Lets have a quick look on a Demo.
Limitations of AMP
Internal CSSonly : In AMP external and inline css is not allowed. You can use internal css only & a maximum size of 50 Kb is allowed. If it exceeds, it creates validation errors.
HTML tags are restricted : There are some restrictions on html tags in AMP, like img tag is prohibitted, you can use amp-img tag instead. Same for video, audio and other tags.
!important is banned : In AMP, you can’t use !important attribute in css classes.