I will fix HTML CSS javascript bugs and responsive issues

D
diego_erquicia
D
diego_erquicia
Diego Erquicia
fix HTML CSS javascript bugs and responsive issues
Full Screen
fix HTML CSS javascript bugs and responsive issues
Full Screen
Full Screen
fix HTML CSS javascript bugs and responsive issuesfix HTML CSS javascript bugs and responsive issuesfix HTML CSS javascript bugs and responsive issues

About this gig

Is your website broken on mobile, showing layout problems, or affected by an HTML, CSS, or JavaScript bug?


I diagnose and fix clearly defined frontend issues on existing websites built with HTML, CSS, JavaScript, React, or TypeScript.


This Gig can include:

- Responsive fixes for mobile, tablet, or desktop

- HTML and CSS alignment, spacing, or layout corrections

- JavaScript interactions and form issues

- React or TypeScript frontend bug fixes

- Cross-device testing at common screen widths

- A clear summary of the changes made


My portfolio includes Atlas Library, a responsive React and TypeScript application integrated with an external API and deployed on Netlify.


You can order the package that matches the number of issues and pages. Attach the website URL or source files, screenshots, and the expected behavior. If the scope is larger than the selected package, I will explain the best option before starting.


I communicate clearly in English and Spanish.

  • Platform

    • Other

  • Website type

    • Business
    • Landing page
    • Portfolio
    • Forms
    • Saas

  • Programming language

    • JavaScript
    • TypeScript
    • HTML & CSS
    • Bootstrap
    • React
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Diego Erquicia

Diego Erquicia

Full Stack Developer React and ASP NET Core

  • FromBolivia
  • Member sinceJun 2026
  • Avg. response time1 hour

  • Languages

    English, Spanish
I build and improve responsive web applications using React, TypeScript, JavaScript, C#, and ASP.NET Core. I can fix frontend issues, develop REST APIs, integrate authentication and databases, and deliver tested, maintainable code. My experience also includes Node.js, PostgreSQL, Docker, CI/CD, automated testing, microservices, and observability with OpenTelemetry, Prometheus, Grafana, and Loki. I communicate clearly in English and Spanish and focus on reliable delivery.

My Portfolio

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