Crafting Custom CSS @ PodCamp Toronto 2015 #PCTO15

Crafting Custom CSS
Andy McIlwain (www.andymci.com)
PodCampToronto 2015 | #pcto15
Crafting Custom CSS | @andymci | #PCTO152015-02-21 1

Hi! I’m Andy McIlwain.
Developer at:
Brainrider
Marketers Without Borders
Events&
Instructor/Mentor at:
Camp Tech
Ladies Learning Code
Organizer with:
Toronto WordPress Meetups
WordCamp Toronto
Find me online:
@andymci on Twitter
linkedin.com/in/andymci
instagram.com/andy.mcilwa
in

Why learn CSS?
Immediate gratification!
Make changes to code, see
changes take effect
High reward.
You can make sites look
completely different with
Low risk.
If something goes wrong in
CSS, it’s easy to recover.
It’s a standard.
It doesn’t matter what
service or platform you’re
using. Use your CSS skillz
everywhere!

The Structure
Host / Service: Where your
webpage lives.
HTML: The page structure
and content.
CSS: Rules that control the
“look and feel” of the
JavaScript: Adds interaction,
effects, and additional
functionality. Host / Service
HTML
CSS JavaScript

It’s like building a house!
Host / Service
HTML
CSS JavaScript
Foundation
Framing, Flooring,
Drywall
Fixtures,
Carpeting, Paint
Electrical,
Plumbing, HVAC

We choose what to build on.
Host / Service
HTML
CSS JavaScript
Foundation
Framing, Flooring,
Drywall
Fixtures,
Carpeting, Paint
Electrical,
Plumbing, HVAC

Then we set up the structure.
Host / Service
HTML
CSS JavaScript
Foundation
Framing, Flooring,
Drywall
Fixtures,
Carpeting, Paint
Electrical,
Plumbing, HVAC

Set up controls and interaction.
Host / Service
HTML
CSS JavaScript
Foundation
Framing, Flooring,
Drywall
Fixtures,
Carpeting, Paint
Electrical,
Plumbing, HVAC

Then we make everything pretty.
Host / Service
HTML
CSS JavaScript
Foundation
Framing, Flooring,
Drywall
Fixtures,
Carpeting, Paint
Electrical,
Plumbing, HVAC

Today we’ll look at HTML & CSS.
Host / Service
HTML
CSS JavaScript
Foundation
Framing, Flooring,
Drywall
Fixtures,
Carpeting, Paint
Electrical,
Plumbing, HVAC

HTML Tags
HTML tags are to web pages as
frames are houses. Key points:
• Wraps content
• Defines parts of the page
• Uses classes and IDs
<body>
<div id=“head”>
<h1>This Is A Headline</h1>
</div>
<div id=“content”>
<p>This is a paragraph of
content. There are many like
it, this one is mine.</p>
</div>
</body>

CSS
CSS stands for Cascading Style
Sheets.They control the “look and
and feel” of web pages. If we were
building a house, CSS would be in
charge of laying the carpet and
painting the walls.
Key points to remember:
• CSS sets appearance rules for
HTML
• Targets elements, classes, and IDs
• Rules wrapped in “curly brackets”
{ like this }
body {
background: white;
font-family: Arial, sans-
serif;
}
#head {
background: black;
color: white;
}
#content p {
font-size: 14px;
margin: 10px 0;
}

How They Work Together
When your browser loads a page, it looks at
the elements on the page and checks if there
are CSS rules for those elements. Key points:
• HTML uses id and class
• CSS uses # and .
• When we see id, we target with #
• When we see class, we target with .
HTML CSS
<div id=“header”>
</div>
#header {}
<div class=“post”>
</div>
.post {}

Connecting HTML & CSS
HTML CSS
<body>
<div id=“header”>
</div>
<div id=“content”>
</div>
</div>
<div id=“footer”>
</div>
</body>
body {}
#header {}
#content {}
.post {}
#footer {}

Getting More Specific
HTML CSS
<h2>Post Title</h2>
<p>Paragraph of content.</p>
</div>
.post {}
<h2>Post Title</h2>
</div>
.post h2 {}
<h2>Post Title</h2>
</div>
.post p {}

What Rules Can We Use?
Some Example Rules What It Does
background-image: url(…) Defines background image.
float: left; Positioning relative to subsequent elements.
background-color: #fff; Defines background color.
font-family: Arial, sans-serif; Defines the font to use.
font-size: 24px; Defines the size of the font.
font-weight: bold; Defines the weight of the font.
color: red; Defines the colour of the font.
width: 400px; Defines the width of the targeted element.
height: 400px; Defines the height of the targeted element.
Find more rules at tympanus.net/codrops/css_reference/

CodePen Demo
Let’s play with some basic CSS:
http://codepen.io/andymci/pen/EaQEXW

Inspecting Other’s Work
• Your browser comes
equipped with
DeveloperTools
• You can inspect page
code
• You can play with code
that only affects your
browser
Here’s how you do it in Firefox, Chrome, Internet Explorer, and Safari.

Let’s look at some live sites.
CBC New Republic
PodCamp Toronto Apple

Applying Custom CSS
• Inspect your theme/layout
• Determine what you need to
target
• Test it out in your browser
• Apply rules to your
Custom CSS Editor
Platform Adding Custom CSS
WordPress.com Custom CSS Upgrade
WordPress Plugins Jetpack’s Custom CSS Module
Simple Custom CSS
Tumblr Custom CSS
Squarespace CSS Editor
Blogger Template Designer

Tumblr Demo
Let’s use myTumblr as a guinea pig.

Recap!
• HTML is the structure.
• CSS is the “look and feel”.
• CSS targets specific
IDs, and classes.
• Use Dev Tools to
what to target and
with CSS in your browser.
Host / Service
HTML
CSS JavaScript
Inspect with Dev Tools!

Useful Tools & Resources
CSS Reference
MDN CSS Reference
CoDrops CSS Reference
Inspiration
CSS Tricks
CSS Zen Garden
CSS Mania
Courses
Codecademy CSS Course
CodeSchool CSS
Treehouse CSS Basics
Useful Tools
CodePen (Recommended!)
CSS Desk

Thank You! Questions?
Slides will be posted online:
www.slideshare.net/andymci
Find me online:
www.andymci.com | @andymci | linkedin.com/in/andymci

Crafting Custom CSS @ PodCamp Toronto 2015 #PCTO15

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