INLINE CSS INJECTOR BY NEBULA

Inline CSS Injector by Nebula

Published November 2025

    •    Updated March 2026

Plugin details

Add custom CSS to your Bubble pages using one element and a dynamic text field, with support for responsive rules and dynamic values.

Nebula - Inline CSS Injector

Description

Overview

Add custom CSS to Bubble pages using single element with dynamic CSS field. Supports Bubble expressions, responsive rules, media queries, animations. Dual approach: style tag in head + inline styles with !important for override power.

Key Features
Dynamic CSS with Bubble expressions

Responsive rules and media queries

Inline styles with !important flag

CSS variables and calc() functions

Transitions and @keyframes animations

Target by ID Attribute for stability

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consider supporting its development
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Free

For everyone

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4 installs  

This plugin does not collect or track your personal data.

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Platform

Web

Contributor details

Nebula

Joined 2023   •   25 Plugins

View contributor profile

Instructions

Instructions
Quick Start
Add Inline CSS Injector element to your page

Set unique ID Attribute on target elements (gray panel)

Paste CSS code in CSS Style field targeting those IDs

Use Bubble dynamic expressions inside CSS for dynamic values

Preview to see styles applied

Example CSS

#myButton {
  background: linear-gradient(45deg, #667eea, #764ba2);
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
  #myButton { font-size: 14px; }
}

Tips
Target elements by ID Attribute for stability (#myElement)

Use Bubble expressions: background: <dynamic color>;

Styles applied with !important flag for maximum override

Supports media queries, animations, pseudo-classes

Multiple elements possible for organized CSS sections

Need Help?

Find documentation, guides, and other useful plugins
to help you get the most out of this tool

Types

This plugin can be found under the following types:

Background Services   •   Element

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Inline CSS Injector by Nebula

Plugin details

Free

For everyone

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Contributor details

Instructions

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