You will get responsive React or Next.js UI bugs fixed with viewport QA
Project details
Have a React or Next.js page that works at one width and breaks at another?
I repair a bounded list of reproducible frontend UI defects on one existing route or template. Good fits include horizontal overflow, clipping, breakpoint collisions, covered click targets, sticky header or menu issues, modal or focus problems, and simple local interaction regressions.
Every tier includes:
• a focused source patch or commit
• root-cause and changed-file notes
• before/after evidence
• Chromium checks at 320, 360, 390, 430, 1280, and 1440 CSS-pixel viewports
• concise reproduction and handoff notes
The supplied project must run from the provided source. The final numbered bug list, route or template, access, and observable acceptance checks must be included in the mandatory requirements.
This is a focused frontend repair service, not a redesign or feature build. If an issue may involve APIs, authentication, payment logic, third-party services, or an unclear root cause, please message me before purchasing.
The gallery is a static methodology reconstruction using synthetic data. It is not client work and not React runtime evidence.
I repair a bounded list of reproducible frontend UI defects on one existing route or template. Good fits include horizontal overflow, clipping, breakpoint collisions, covered click targets, sticky header or menu issues, modal or focus problems, and simple local interaction regressions.
Every tier includes:
• a focused source patch or commit
• root-cause and changed-file notes
• before/after evidence
• Chromium checks at 320, 360, 390, 430, 1280, and 1440 CSS-pixel viewports
• concise reproduction and handoff notes
The supplied project must run from the provided source. The final numbered bug list, route or template, access, and observable acceptance checks must be included in the mandatory requirements.
This is a focused frontend repair service, not a redesign or feature build. If an issue may involve APIs, authentication, payment logic, third-party services, or an unclear root cause, please message me before purchasing.
The gallery is a static methodology reconstruction using synthetic data. It is not client work and not React runtime evidence.
Programming Languages
HTML & CSS, JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$99
|
Standard
$229
|
Advanced
$349
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 4 days |
Number of Revisions | 1 | 2 | 2 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments | - | - | - |
Frequently asked questions
About Dongju
React & Next.js Frontend Developer | Responsive UI & Bug Fixes
Kimhae, South Korea - 8:55 pm local time
I can help when:
• a marketing page breaks at mobile or desktop widths
• navigation, modals, forms, or CTA states behave incorrectly
• an existing route needs a focused UI cleanup
• a small brand site needs clear scope, responsive implementation, and handoff
My workflow is practical: reproduce the issue, agree on pages or defects, implement only the funded scope, check the agreed Chromium viewports, and deliver the source changes with concise cause, QA, and run notes.
Relevant proof:
• two paid OBS/PRISM browser-tool deliveries with two public 5.0 reviews on a Korean marketplace
• LIMEN, an independent fictional React 19 five-page responsive concept—not client work
• a self-operated multilingual marketing site
Core stack: JavaScript, TypeScript, React, Next.js, HTML, CSS, Node.js, REST APIs, SQL/PostgreSQL, Git, Vercel, and browser QA.
I do not present independent concepts as client work or promise revenue, rankings, universal browser support, or unsupported backend/payment functionality. Message me with the current URL or repository, exact screens, widths, deadline, and desired outcome. I work fully online and text-first, with translation assistance where needed.
Steps for completing your project
After purchasing the project, send requirements so Dongju can start the project.
Delivery time starts when Dongju receives requirements from you.
Dongju works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce and document the baseline
I run the supplied project, reproduce each accepted issue, and record its current behavior and observable acceptance check.
Repair the accepted frontend scope
I implement focused React, Next.js, JavaScript, TypeScript, HTML, or CSS changes for the purchased bug count.