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Tips & Tricks in
Front-End Development
Ire Aderinokun | forLoop #2
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About me
• Ire Aderinokun
• User Interface Designer and
Front-End Developer
• Design+Tech, Big Cabal Media
• Writer, www.bitsofco.de
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How Do I…?
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Centre an Element Both
Horizontally and Vertically?
How do I…
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2D Transforms
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2D Transforms
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Flexbox
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Make sure an image
always fills it’s container?
How do I…
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object-fit
• fill
• contain
• cover
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object-fit: fill;
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object-fit: contain;
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object-fit: cover;
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Make sure an image is
always visible within the
viewport?
How do I…
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Viewport Units
• vh
• vw
• vmin
• vmax
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Viewport Units
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Make a fixed fullscreen
background image responsive?
How do I…
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background Property &
Viewport Units
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Handle visited vs.
unvisited links?
How do I…
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a:visited
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localStorage
http://joelcalifa.com/blog/revisiting-visited/
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Deal with broken
images?
How do I…
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2 Facts about ![]()
1. We can apply typography-related styling to the ![]()
element
2. The ![]()
element is a “replaced element”
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Styling the alt Text
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Styling the Pseudo-Elements
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Deal with empty
states?
How do I…
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:empty
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:empty
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Make embedded
content responsive?
How do I…
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Fixed Dimensions
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position: absolute;
https://www.smashingmagazine.com/2014/02/making-embedded-content-work-in-responsive-design/
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Fluid Dimensions
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postMessage API
iframe.js
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postMessage API
parent.js
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Let’s talk about
that Browser
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browser?
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60% of users are on Opera Mini
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What’s the deal with
Opera Mini?
• High vs Extreme Savings Mode
• Uses the Presto rendering engine
• Limited support for many HTML, CSS, and Javascript
features
• Javascript is executed on the server, not the client
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Some Tips
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Start with Semantic HTML
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Provide Sensible
Fallbacks or Alternatives
Web Fonts System Fonts
Icon Fonts SVG or Images
Gradients Solid Background Colours
Animations Meaningful Initial Frame
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Flexbox is your Friend
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Use SVG
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Test Without Javascript
• Can the user complete the main purpose of the site
without javascript enabled?
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Opera Mini forces us to practice
Progressive Enhancement
teaches
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Workflow Tips
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CSS
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JavaScript
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Automation
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Other
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Thanks!
www.ireaderinokun.com
www.bitsofco.de
@ireaderinokun