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snookca
April 27, 2017
Programming
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Responsive Web Applications
At Squares Conf.
snookca
April 27, 2017
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Transcript
Responsive Web Applications with Container Queries
A talk more about process than code
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Beautiful Accounting Software
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Goal #1 Evolve the design
Goal #2 Support Multiple Devices
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Goal #1 Evolve the design
Goal #2 Support Multiple Devices
Responsive
Responsive
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Device-specific design and development
Designers see a feature through all platforms
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Goal #1 Evolve the design
Goal #2 Support Multiple Devices
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Monolithic app with accessible templates
Ignored Mobile Web
Limited Mobile App
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Each horizontal block is considered in the context of the
viewport
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Each page can more easily be art directed
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• No orders • One order • Less than one
page of orders • Multiple pages of orders • Has Info Notifications • Tab overflow • Has Warning Notifications • Has limited access to features • Has different apps installed
And now consider all of those things for multiple viewports
A single page in a web application can have dozens
of variations
A component-based site has components respondingly differently to multiple contexts
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With media queries, you have to know the possible interplay
of all objects
With container queries, you only have to know the interplay
within a single object
No spec for container queries
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Declare in: CSS, HTML, or JavaScript
https://github.com/ResponsiveImagesCG/cq-demos .element:media( min-width:500px ) {} https://github.com/tysonmatanich/elementQuery .element[min-width~="500px"] { background-color: #eee;
}
http://elementqueries.com/ @element ".element" and (min-width: 500px) { .element {
background: gold; } }
https://github.com/tysonmatanich/elementQuery .element[min-width~="400px"] { }
To parse CSS, either need to be on same domain
or set up CORS
https://github.com/Snugug/eq.js data-eq-pts="small: 400, medium: 600, large: 900"
At HTML level, requires consistency of implementation across app
We chose JavaScript
elements = [ { "module": ".flex--2x1", "className":"responsiveClass", "minWidth": 768, "maxWidth":
1024 } ]
Going Responsive meant a consistent feature set across all devices
New features automatically have cross-device support
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Went responsive in under a month†
How the heck do you do that in a month?
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There’s a discernible delay in execution
It’s not about the properties, it’s about the purpose.
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Tried to use grid classes for everything
Had to write extra classes just to define responsive story
Single purpose classes resulted in less edge cases (and less
code!)
Gzip minimizes duplicate properties really well
Tables are difficult
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Avoid too much on the horizontal axis
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Goal #1 Evolve the design
Goal #2 Support Multiple Devices
Goal #1 reframed: Allow anybody to make product-wide design changes
quickly and easily
Problem: Different tech stacks
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Make the right things easy and the wrong things hard
10 5
Yahoo! still does a custom experience per device
Shopify is getting rid of Container Queries
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<div class="two-columns"> <div class="col1"> … </div> <div class="col2"> … </div>
</div>
.two-columns { display: flex; flex-wrap: wrap; } .col1, .col2 {
flex-grow: 1; } .col1 { flex-basis: 66%; min-width: 360px; } .col2 { flex-basis: 33%; }
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<div class="media-body"> <div class="media-content"> </div> <div class="media-actions"> <a href="…"> Button
</a> </div> </div>
.media-body { display: flex; flex-wrap: wrap; }
.media-content { flex-grow: 1; flex-basis: 400px; margin-right: 20px; }
.media-actions { align-self: center; margin: 20px 0; }
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<div class="items"> <div class="box">…</div> <div class="box">…</div> <div class="box">…</div> </div>
.items { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }
<div class="box"> <div class="box-image"> <img src="…" height="150" > </div> <div
class="box-content">...</div> </div>
.box { display: flex; flex-wrap: wrap; }
.box-image { flex-grow: 1; flex-shrink: 0; flex-basis: 150px; } .box-image
> img { width: 100%; object-fit: cover; }
.box-content { margin: 10px; flex-shrink: 1; flex-grow: 1; flex-basis: 60%;
}
None
Designers should think Responsive before they need to.
Container Queries enable faster development
Use techniques to avoid media or container queries altogether
http://ricg.io
Thank you. http:/ /snook.ca/ @snookca