Multi-Class CSS, Finally Native in Flare
Your stylesheet is one design tweak away from becoming unmaintainable. Stop building one-off classes — start layering styles the way CSS was designed to work.
Apply multiple style classes to any Flare element. Preview, layer, and manage compositions, without creating endless single-purpose classes.
Class explosion: a museum of past decisions
Every new style combination needs a brand-new class. warning-large-bold-yellow-bordered. Hundreds of one-off classes. CSS files no one wants to touch.
You know how CSS should work. You've watched the workaround pile up topic by topic. Single-purpose classes are a workaround, not a solution — and the stylesheet has now become brittle, expensive, and frustrating to maintain.
Compose styles the way every modern web tool has for fifteen years
Style Stack adds proper multi-class composition with a preview pane. Layer warnings, sizes, colors, and borders without inventing a new class for every combination. Apply as many classes as you need to any Flare element — just like standard HTML/CSS. Smart auto-complete helps writers find the right combination fast.
Stylesheets shrink. New combinations are instant. Any writer can apply or layer styles confidently.
What Happens If You Don't Act
- Stylesheet bloat makes every CSS change riskier — side effects become unpredictable
- New writers pick wrong classes because names don't reflect composition
- Inconsistency erodes output quality as writers improvise different workarounds
Key Features
Multi-Class Application
Apply as many style classes as you need to any element in Flare — just like standard HTML/CSS.
Smart Auto-Complete
Find and apply classes quickly with intelligent suggestions that know your stylesheets.
Works With All Stylesheets
Compatible with all your existing Flare stylesheets — no CSS changes required. Install and start using immediately.
Eliminate Class Bloat
Stop creating single-purpose combination classes. Layer existing classes to achieve exactly the look you want.
Get Started in 3 Steps
Install free trial
Download and install — no license key needed for 14 days.
Open any topic
Select an element and check the classes you want to apply.
Delete combination classes
Layer existing classes instead. Watch your stylesheet shrink.
Pricing
Lifetime license · Includes updates
See It In Action

Common Questions
Will this work with our Flare setup?
Style Stack works with MadCap Flare 2020 and later on Windows. It works with all your existing stylesheets — no CSS changes required. Just install and start applying multiple classes to any element.
What if we outgrow it?
Style Stack doesn't impose limits. Apply as many classes as you need to any element. As your stylesheet grows, the smart auto-complete helps writers find the right combinations without memorizing class names.
How long until we see results?
Immediately after installation. Open any topic, select an element, and check the classes you want to apply. No configuration needed. Your team stops creating single-purpose class combinations from day one.
Maintain a Flare stylesheet that any writer on your team can actually read.
$19.95 one-time · Lifetime license · Includes updates
