fossgis/3dmr

Upgrade Bootstrap from 3.3.7 to 5.x

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#69 opened on Dec 12, 2025

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UI/UXfrontendgood first issue

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Description

The project is currently running on an older version of Bootstrap 3.3.7. Several components and styling patterns rely on legacy classes, and many modern Bootstrap 5.x components could significantly improve the UI and code maintainability.

Upgrading to Bootstrap 5.x will require:

  • Replacing the existing Bootstrap 3.3.7 assets (see bootstrap.min.js)
  • Updating markup to match Bootstrap 5.x conventions (utility classes, grid changes, dropped components, renamed classes, etc.)
  • Reviewing all affected template files (most are under mainapp/templates/mainapp)
  • Verifying each page for visual regressions due to discontinued or restructured classes
  • Optionally adopting new Bootstrap 5 components to modernize UI/UX

This is a large-scale refactor. Nearly all templates will be affected, and careful manual inspection will be needed to preserve layout, styling, and interactive behavior.

Contributor guide

Research direction
Review all template files to identify Bootstrap 3 dependencies, then systematically replace classes and components with Bootstrap 5 equivalents, testing each page for visual regressions.
Tech stack
htmlcssjavascript
Domain
frontend
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
BootstrapHTMLCSSGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
15