- From: Rune Lillesveen <rune@opera.com>
- Date: Fri, 11 Oct 2013 16:34:42 +0200
- To: Kenneth Rohde Christiansen <kenneth.christiansen@gmail.com>
- Cc: Rick Byers <rbyers@chromium.org>, www-style list <www-style@w3.org>, John Mellor <johnme@chromium.org>, "Kostiainen, Anssi" <anssi.kostiainen@intel.com>
On Wed, Oct 2, 2013 at 4:50 PM, Kenneth Rohde Christiansen <kenneth.christiansen@gmail.com> wrote: > Here is my suggestion for a new introduction (stop referring to desktop): > > CSS 2.1 [CSS21] specifies an initial containing block for continuous > media that has the dimensions of the viewport. Browsers on mobile > devices generally have a viewport that is a lot narrower than on > non-mobile devices due to their form factors. Sounds fine. > Considering the CSS > pixel size recommended by CSS 2.1 and the percentage of arm's length > where the devices are usually held (around 60-70%), the resulting > initial containing block width is narrower than for which most sites > were designed. I find the arm length percentage text odd. How about: The physical size of the screen in combination with the size of the reference pixel as defined in [css-values-ref-here] results in a considerably smaller initial containing block than for which most sites were designed. > As a result, many mobile browser vendors use use a fixed initial > containing block size that is wider than the actual viewport as as a > result doesn’t adhere to the CSS 2.1 pixel size recommendation. In > addition to scrolling or panning, zooming is often used to change > between an overview of the document and zoom in on particular areas of > the document to read and interact with. wider -> larger -as remove "actual" since it could be confused with the term introduced later in this spec. How about: As a result, many mobile browser vendors use a fixed initial containing block size that is larger than the viewport. In addition to scrolling or panning, zooming is often used to change between an overview of the document and zoom in on particular areas of the document to read and interact with. > Certain DOCTYPEs (for instance XHTML Mobile Profile) are used to > recognize mobile documents which are assumed to be designed for > handheld devices, hence using the viewport size as the initial > containing block size. OK. > Additionally, three different vendor HTML META tags have been > introduced over time, allowing an author to specify things such as the > size of the initial containing block and the initial zoom factor > directly. The most popular of these is the viewport META tag, which is > universally supported by all current mobile browsers. These > implementations, however, are not fully interoperable and this > specification is an attempt at standardizing the functionality > provided by the viewport META tag in CSS. Drop "things such as"? Drop "universally"? -- Rune Lillesveen
Received on Friday, 11 October 2013 14:35:13 UTC