This document provides an overview of HTML5 best practices for mobile design. It begins with introductions and outlines the session agenda. The presenter then discusses high-level principles like universal design and progressive enhancement. Specific techniques covered include viewport meta tags, media queries, scalable images, HTML5 tags, and touch-friendly guidelines. CSS topics include grids, backgrounds, gradients, and transitions. JavaScript behaviors like navigation, forms, and geolocation are also reviewed. Useful frameworks, polyfills, and testing tools are presented. The overall message is that mobile design requires an adaptive, user-centered approach through careful content structuring, responsive presentation, and unobtrusive behavior.

1. HTML 5 Mobile Nitty-Gritty

2. Who the heck are you?
Mario Noble ● web designer
● front end developer
"integrator"
● over ten years of
experience
● freelance/ company /
small and enterprise
● principal at Context
Multimedia and Mario
Noble Design
● organizer SCWDD

3. What this is and isn't
This is a medium dive
into "HTML 5"
practices for mobile.
This isn't
comprehensive guide
to everything
mobile/HTML5 nor a
guide on native mobile
app development. HTML5 = new Web 2.0?

4. Goals
● Give a mental model and
context
● Show/tour a basic
version in action
● Act as a guide to starting
points for research
● Inspire people to get
going or to be advocates
for a Universal approach

5. A start to getting it done.

6. Agenda
● Overview - General tour of a typical page
● Gritty Tips and Tricks.
● Some useful tools and plugins
● Summary
● Q&A
10-20 minutes each

7. High level overview

8. Why are we doing it?
Usability, Usefulness and Relevancy

9. It's not just about
mobile
It's about Universal Design

10. Design for all
Even this guy.

11. Dovetails
with Accessibility
Not just political correctness

12. We're all now disabled
sometimes
● need scalable text ● unclear interfaces
● low bandwidth ● difficult data entry
● contrast problems ● cognitive overload
● video captioning ● coordination issues

13. Warning: Cliches ahead!
● Less is More.
● Form follows Function.
● In Crisis, Opportunity.
● KISS

14. Priorities
Limitations, Constraints and Boundaries...oh
my!

15. Lamp versus Laser focus

16. When one door closes, a window opens.
UD is both a narrowing and broadening opportunity

17. Beware of one size fits all.

18. The difference between a
site and an app
general orientation task oriented

19. Sometimes these blur...

20. A little nitty gritty
Shared approaches and differences

21. Some context...
General Elements Tech Specifics
Structure HTML
Adaptation JS
Capability CSS
Polyfilling/ Fallbacks Frameworks
Performance Plugins
Testing Server side

22. Shared approaches
● Progressive enhancement
● Scaling content
● "Fat finger design"
● Contextual Adaptation (geo, time, offline
access, web workers)
● Gestures
● PNGs
● Utilizing CSS3 and HTML 5 over JavaScript
● Image sprites

23. Differing approaches
● Desktop polyfill support
● HTML5 / CSS 3 support
● Explicit permissions
● App store limits
● Vectors (SVG and Canvas)
● Webfonts
● Splash screens
● Security
● Form elements

24. Various custom methods
Mobile Responsive JavaScript
Templates Design Tweaks

25. Mobile
Templates
May be user agent sniffing dependent

26. JavaScript
Tweaks
Various options

27. Responsive
Design
Needs CSS3 media queries

28. I prefer Responsive Design
But sometimes it's almost a religious debate...
No one says you can't mix and match.

29. Quick tour!
Let's leave these slides for a bit...

30. Whew!
...we're back to the slides.

31. Tips and Tricks
Let's get a little dirty.
Well, not that dirty...

32. Let's Start!
We'll focus on Content, Presentation and
Behavior

33. Content

34. Viewport meta tag
Include in your HEAD
<meta name="viewport" content="
width=device-width, initial-scale=1.0">
<meta name="viewport" content="initial-
scale=1, maximum-scale=1">
used for iOS landscape/portrait fix - prevents
user zoom though
good reference on Mozilla Dev Network

35. @media breakpoints and
ranges
@media (min-width: 800px) { ... }
@media tv (min-width: 800px) { ... }
@media all and (max-width: 599px) {...}
@media (min-width: 800px) and (orientation: landscape) {
... }
@media all and (min-width: 481px) and (max-width: 799px)
{...}
A "mobile first" /LCD approach helps a lot!
Other parameters sometimes supported: aspect ratio,
resolution, monochrome
See MDN

36. Flip it good
@media screen and (orientation:portrait) {
/* Portrait styles */
}
@media screen and (orientation:landscape) {
/* Landscape styles */
}
Can be used to target iOS devices along with
their width as well.

37. @media queries
Bringing them in
Individual stylesheets:
<link rel='stylesheet' media='screen and (min-width: 801px)
and (max-width: 961px)' href='css/medium.css' />
Or embed inline
Or @import into parent stylesheet
example: @import url(red.css) (min-width:400px);
Best method: use @media in main stylesheets and/or
bring in during compile with preprocessors. Centralizes
styles and reduces http requests

38. HTML5 tags and ARIA roles
<HEAD> role="banner"
<NAV> role="navigation"
<SECTION> role="main" (new!)
<ARTICLE> role="complementary"
<ASIDE> role="search"
<FOOTER> role="contentinfo"
<HGROUP> use instead of a class
header[role="banner"]
Needs Shiv for IE < 9 {}

39. Scalable images
img {max-width: 100%; }
img {max-width: 100% !important; }
img {max-width: 100%; border-width: 0;
vertical-align: middle; -ms-interpolation-mode:
bicubic; height: auto;}
Additional bandwidth friendly options:
Filament Group, Adaptive, Picturefill

40. HTML Video
Too complex to go over here.
Use something like fitvids.js for scaling third
party embedded videos.
Useful resources if you want to roll your own:
https://developer.mozilla.org/en-
US/docs/HTML/Element/video
http://diveintohtml5.info/video.html

41. Normalization vs.
Reset Styles
Processing overload vs maintenance

42. Presentation

43. "Fat finger"
touch guidelines
28 pixels to 72 pixels

44. Pixels and rems
Font-size can be pixels for IE < 9 and rems
(root em) for everyone else
Root base size 14px
example:
.main-navigation {
font-size: 11px;
font-size: 0.785714286rem; /* 11/14 */
}

45. Beware of display:none
Many people think if they use display:none on
an element in css, the background won't load.
This is often wrong.
Great breakdown on timkadlec.com
There are ways:
1. display:none on the parent element
2. display:none within media queries
Not absolutely consistent in Fennec browser.

46. RGB and RGBA
div {
background: #c83636;
background:transparent; filter:progid:
DXImageTransform.Microsoft.gradient
(startColorstr=#50990000,
endColorstr=#50990000);
zoom: 1;
background: rgb(200, 54, 54);
background: rgba(200, 54, 54, 0.5);
}

47. Multiple backgrounds
#exampleA {
width: 500px;
height: 250px;
background-image: url(decoration.png), url
(ribbon.png), url(old_paper.jpg);
background-repeat: no-repeat;
background-position: left top, right bottom, left
top;}
courtesty of CSS3.info

48. CSS Background sizing
background-size: 200px;
background-size: 200px 100px;
background-size: 200px 100px, 400px 200px;
background-size: auto 200px;
background-size: 50% 25%;
background-size: contain;
background-size: cover;
courtesy of CSS3.info

49. Grids
You can still use the 960 grid. However, you
may want to consider designing in 300px
"chunks" for easy linearization on small
screens.
320andup can use a 4 column layout which
covers many situations.

50. Rounded corners and
shadows!
#somediv {
-moz-border-radius: 18px;
border-radius: 18px;
box-shadow: 20px 20px 10px #CCC;
text-shadow: 1px 1px 1px #000;
}

51. CSS Gradients
background: #1e5799; /* Old browsers */
background: -moz-linear-gradient(left, #1e5799 0%, #2989d8 50%, #207cca 51%, #7db9e8 100%); /*
FF3.6+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%,#1e5799), color-stop(50%,
#2989d8), color-stop(51%,#207cca), color-stop(100%,#7db9e8)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(left, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /*
Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /*
Opera 11.10+ */
background: -ms-linear-gradient(left, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /*
IE10+ */
background: linear-gradient(to right, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /*
W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',
GradientType=1 ); /* IE6-9 */
Argh!

52. CSS Gradients Cont.
Make your life easier. Use Colorzilla's gradient
generator, a preprocessor mixin or another tool:
http://www.colorzilla.com/gradient-editor/

53. Getting your percentage
Try to use percentages on columns for better scalability.
For Example:
@media tv (min-width: 1024px) {
#container {width:960;}
}
#mainContent {width: 60%;}
#sidebar{width: 40%;}

54. Transitions, Transforms
and Animation
Use them instead of JavaScript animations when possible
for better performance on mobile devices. Provide fallback
for older desktop environments when necessary.
Good resource: http://www.css3maker.com/
Example Transform:
#footer h1:focus { transform: translate(45px, -45px); }
works for scale, skew, rotate
Transitions properties over time:
#footer h1:focus { transition: color 0.2s ease-out;}

55. Transitions, Transforms
and Animation cont.
Animate over keyframes:
@webkit-keyframes 'appear' {
0% { opacity : 0; }
100% {opacity: 1;}
}
.someAnimTarget { -webkit-animation: 'appear' 300ms
ease-in 1 alternate 5s forwards}
As usual, keep in mind browser prefixs -web, -o, -moz

56. Floats and fixed
Complex floating doesn't always play well with
mobile/UD and smooth fixed positioning of
items is spotty in older versions of Android.

57. Behavior

58. Navigation
Many different patterns
One of the most prominent is by the Filament
Group
Good rundown of current patterns
Brad Frost's Basic Patterns , Complex
I use a Return to Top in the footer and Sitemap

59. "Easy" Validation
If creating a mobile only site/app, HTML5 has
some great new form attributes for validation
and finer control.
Examples: required, pattern, autocomplete,
placeholder
See MDN for more examples

60. Modal hell
If you're using modals don't rely on the
close button. Enable close outside modal.

61. No hover, but
click
There is no such thing as hover for touch

62. Reduce, reduce, reduce
Do all the things you should normally do to
optimize but actually do them.
Remember to minify code, gzip files, cache,
CDNs, image sprites and dynamic server side
image resizing where possible on
production/live sites.

63. Geolocation
Involves some javascript and the user's explicit
permission to allow you to use their location.
This also depends on their GPS and network
capabilities to determine where they are.
Fist detect for support using something like
modernizr.js then run a query against the
device.
You may need a fallback

64. Geolocation Cont.
function get_location() {
if (Modernizr.geolocation) {
navigator.geolocation.getCurrentPosition(show_map);
} else {
// this device isn't supporting it
}
}
Try geolocation.js for fallback alternative.

65. Caching
<html manifest="/yourcache. On Apaches set .
manifest"> htaccess file
AddType text/cache-
In that file:
manifest .manifest
ExpiresActive On
CACHE MANIFEST ExpiresDefault
# rev 54 "access"
myscript.js
css/mycss.css
only updated when rev# changes

66. Other great stuff to look
into.
Local Storage
Icon fonts
Canvas and SVG for scalable graphics

67. I probably
missed some
things
But there's only so much time in an hour.

68. Time to rinse off.

69. Useful Tools
When you don't want to roll your own

70. Useful HTML5 frameworks

71. Good Starting Points
HTML 5 Boilerplate Wordpress 2012
Twitter's Bootstrap 320 and up
Zurb's Foundation Jquery Mobile

72. Polyfills/Fallbacks

73. Herding Browser Cats
Modernizr
Feature Detection and basic html tag
fixes
along with Respond.js
Selectivzr
More comprehensive CSS3 support
CSS3 PIE for CSS3-like effects on IE
6-8

74. Some good
helpers/plugins
Warning : Your mileage may vary.

75. Content helpers
Text Galleries
fittext.js Photoswipe
bigtext.js Touch Touch
Sliders Video
Flexslider Fitvids.js
Orbit
Tables
Stacktable.js

76. Process and Test
A few good building processors and
testing tools

77. Make life easier
CSS Preprocessors CSS3
SASS/SCSS CSS3 generator
Compass colorzilla gradients
Scout Transition maker
LESS Testing
Less App Adobe Inspect
Winless Animation
Stylus Adobe Animate

78. There's an App
for apps...to wrap that.

79. Native App Wrappers
Compilers Builders
Apache AppMobi
Cordova/PhoneGap
Appcelerator/Titanium Tiggzi
Icenium Application Craft

80. How does this relate to
me?

81. Skill set takeaway
● HTML5
● CSS3
● Preprocessors
● Content/Context User
Centered approach
● Progressive
enhancement attitude
● Fallback planning
● Willingness to Prioritize
and Test
● Get in deep with a
framework

82. To sum up
Mobile design and development can be both
challenging and rewarding.
Reach more people than ever before in more
contexts than ever.
The field is in flux but the reality is clear.
Something needs to be done.

83. Say more. Do more.
Q&A?