Acquire practical programming skills and practical skills with the HTML CSS problem collection app!
Contains a wide variety of problems that can be learned step by step from the basics to applications of web development, from beginners to advanced users.
Even beginners in programming can learn without difficulty and acquire practical skills that can be used in the field.
Take the first step to becoming a web engineer with a free download!

App Overview
Main Features
Over 500 carefully selected HTML CSS problems
Step-by-step learning for beginners, intermediate and advanced
Practical coding practice
Responsive design support
Offline learning function
Progress management and skill analysis
Target User Section
Recommended for
Beginners in programming
People who want to learn web development
People looking to change jobs to become web engineers
People who want to learn front-end technology
People who want to start web production as a side job

Learning Effect Section
Learning Effect

Master HTML CSS in a short period of time
Acquire practical coding skills
Acquire the knowledge necessary for portfolio creation
Show off your technical skills when changing jobs or looking for a job

The HTML CSS problem collection app is an innovative learning platform that allows you to systematically learn from the basics to applications of web development.
We provide a wide range of problems and curricula for learners of all levels, from programming beginners to those aiming to become web engineers and active engineers who want to improve their skills.

Unlike traditional reference books and online courses, you can learn in a problem format that is close to the actual coding environment, so you can learn theory and practice at the same time. This is a groundbreaking app that combines the convenience of being able to learn easily on a smartphone with the acquisition of full-fledged programming skills.

Main functions and features
Step-by-step learning system
Curriculum design that allows you to step up step by step, from basic grammar for beginners to advanced techniques that can be used in practice. It covers a wide range of topics, from the latest specifications of HTML5 to CSS3 animations and responsive design.

Practical problem format
Not just memorization, but carefully selected problems that you will encounter in actual website production. You can also learn how to write beautiful code that complies with coding standards at the same time.

Target users
Beginners in programming

People who are interested in web development but don't know where to start
People who want to learn HTML and CSS from the basics
People who want to learn programming by themselves

People looking for a career change

People who are considering changing jobs to become web engineers from a different industry
People who want to acquire web production skills as a side job
People who are aiming to become independent as freelancers

Active engineers

People who want to catch up on the latest HTML5 and CSS3 technologies
People who want to further improve their coding skills
People who want to learn how to teach their subordinates and juniors

Students and educators

Students studying web technology in information-related departments
Teachers and lecturers involved in programming education
Students who are about to create a portfolio for job hunting

Learning content details
HTML Basic Course
From the basic structure of HTML5 to the appropriate use of semantic tags, you will thoroughly learn the markup language that forms the framework of a web page. You will also learn coding techniques that take accessibility into consideration.
CSS Basic Course
From the basic concept of style sheets to detailed differences in selectors and understanding of the box model, you will systematically learn the basic knowledge needed to create beautiful web designs.
Responsive Design Course
From the concept of mobile-first design to flexible layout design using media queries, you can master responsive design, which is essential for modern web development.

Learning effects and results
Acquire skills in a short period of time
With an efficient learning method, you can acquire practical HTML CSS skills in about 50% less time than with traditional learning methods.
Ready-to-use technical skills
You can learn coding conventions and optimization techniques required in the workplace, so you will acquire technical skills that will be evaluated as ready-to-use when you start or change jobs.
Continuous learning habits
With gamification elements and a personalized learning experience, you can enjoyably continue learning programming, which tends to be a setback.

Differences from other companies' services
Practical curriculum
The problem structure reflects not only theory, but also the technologies and trends used in actual development sites. You will acquire skills that can be immediately used in the field.

Mobile-specific learning experience
Interface and operability optimized for learning on smartphones. You can make effective use of your commute time and spare time.

Cost performance
High-quality learning content at an affordable price. Compared to programming schools, it has achieved overwhelming cost performance.

Future updates
The current number of questions is not all there is, so we plan to add questions at regular intervals in the future.
We plan to continuously update content in line with web development trends.
Based on user feedback, we will continue to provide a more practical and valuable learning experience.