Heya, nice to meet you! I'm Renildo.

I'm the creator of Yumma CSS. I'm all about the look and the functionality, so I usually build everything, from the framework to the apps.

Projects

01

Yumma CSSyummacss.comA utility CSS framework derived from CSS property names. Initials of the property, initials of the value. If you know CSS, you already know it.Yumma UIyummacss.com/uiAccessible components you add to your project from the terminal, built on Base UI.Snippetssnippets.renildo.devTurn code into a beautiful screenshot. Pick a theme, customize the frame, share a link.

Experience

02

Where I've been spending my time.

Customer Support Consultant

Concentrix Lisboa, Portugal

Apr 2026 – Present

Help customers over voice, email and chat: clear answers, clean handoffs when something needs more digging.

Frontend Developer

Yumma CSS Barreiro, Portugal

Oct 2023 – Present

Lead Yumma CSS and Yumma UI: the framework, the components, the docs, and the tooling around them.

Writing

03

Some of my thoughts, when I have the time.

Why I don't use Tailwind?2026Just a quick rant about Tailwind CSS.

About

04

The short version.

I love building open source projects, and most of what's in them exists because I wanted to use it and it didn't exist yet.

You can find me on GitHub, or say hello on Twitter.