Rob O'Leary Rob is a solution architect, fullstack developer, technical writer, and educator. He is an active participant in non-profit organizations supporting the underprivileged and promoting equality. He is travel-obsessed (one bug he cannot fix). You can find him at

Stories by Rob O'Leary

Using CSS Content-Visibility To Boost Your Rendering Performance

Using CSS content-visibility to boost your rendering performance

CSS content-visibility helps boost rendering performance by controlling whether or not an element renders its contents.

Rob O'Leary
Nov 8, 2023 ⋅ 12 min read
CSS Trigonometry Practical Applications

CSS trig functions: Practical applications

We use CSS trigonometry functions to make precise measurements and create shapes, layouts, animations, and creative designs.

Rob O'Leary
Jun 21, 2023 ⋅ 10 min read
Create Beautiful Stroked Text CSS

Can you create beautiful stroked text in CSS?

We explore several approaches for creating stroked text (or outline text) in CSS and with SVGs and look at many stroked text examples.

Rob O'Leary
Apr 5, 2023 ⋅ 11 min read
CSS Logo Over Swirly Background

How to create parallax scrolling with CSS

This article demystifies the parallax scrolling technique. Get insights on how to implement parallax scrolling with CSS without compromising UX.

Rob O'Leary
Mar 17, 2023 ⋅ 15 min read
CSS Breakpoints Responsive Design

CSS breakpoints for responsive design

We discuss the role of CSS breakpoints in responsive design, reviewing different methods of choosing breakpoints and some best practices.

Rob O'Leary
Mar 2, 2023 ⋅ 11 min read
CSS Logo Over Lake Background

A deep dive into the CSS float property

Let’s discuss the history of CSS float and show how it can be used in modern web design to achieve creative text layouts.

Rob O'Leary
Aug 19, 2022 ⋅ 9 min read
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Testing a Svelte app with Vitest

Vitest has become the first choice dev tool for Svelte. Learn about its features and integrations and how it compares to Jest.

Rob O'Leary
Jun 22, 2022 ⋅ 12 min read
Data Visualization in Svelte and d3

Data visualization with Svelte and D3

Let’s explore the advantages of the hybrid approach of using Svelte and D3 together for data visualization.

Rob O'Leary
Mar 22, 2022 ⋅ 11 min read
Using Prettier And ESLint To Automate Formatting And Fixing JavaScript

Using Prettier and ESLint to automate formatting and fixing JavaScript

Learn how to use ESLint and Prettier together to automatically format and fix JavaScript code in your projects.

Rob O'Leary
Feb 11, 2022 ⋅ 8 min read
Using Stylelint To Improve And Lint CSS, SCSS, And Sass

Level up your CSS linting using Stylelint

Level up your CSS, SCSS, and Sass linting skills and improve your code quality using this advanced guide on Stylelint.

Rob O'Leary
Aug 17, 2021 ⋅ 7 min read
VS Code Extensions in JavaScript

Writing VS Code extensions in JavaScript

Learn how to set up a project and write your first VS code extension in JavaScript.

Rob O'Leary
Apr 1, 2021 ⋅ 11 min read
CSS Logo

The latest features of CSS in 2021

This overview covers the latest major CSS features to make it to browsers in 2021 and includes clear use cases for them.

Rob O'Leary
Mar 2, 2021 ⋅ 6 min read