HTML, CSS, and Docker: The Ultimate Cheat Sheet for Web Developers

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In modern web development, knowing how to efficiently build and deploy web applications is crucial. HTML and CSS form the backbone of website structure and design, while Docker streamlines deployment by containerizing applications. This cheat sheet offers essential commands, syntax, and tools to help you master HTML, CSS, and Docker for a seamless development experience.

1. HTML Cheat Sheet

HTML cheat sheet: Quick reference for tags, attributes, and structure. Includes headings, paragraphs, links, images, forms, lists, and more. It uses a system of elements enclosed in tags to organize and present content.

Common HTML Tags

TagDescriptionExample
<html>Root of an HTML document<html lang=”en”>
<head>Contains meta-information<head><title>Page</title></head>
<body>Contains the content of the webpage<body>Content here</body>
<h1> to <h6>Heading tags, from largest to smallest<h1>Main Title</h1>
<p>Paragraph text<p>This is a paragraph.</p>
<a>Hyperlink<a href=”url”>Link</a>
<img>Image<img src=”image.jpg” alt=”Image”>
<ul>, <ol>Unordered/Ordered lists<ul><li>Item</li></ul>
<div>Division or section<div>Content</div>
<form>Form for user input<form>…</form>

Attributes

  • href: Specifies the URL for links.
  • src: Specifies the source for images and media.
  • alt: Provides alternative text for images.
  • class: Assigns CSS classes for styling.
  • id: Unique identifier for an element.

2. CSS Cheat Sheet

CSS cheat sheet: A quick guide for styling HTML with selectors, properties, and values. Covers colors, fonts, margins, paddings, borders, layouts, flexbox, grid, positioning, and responsive design techniques.

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Basic Syntax

selector {

  property: value;

}

Common Selectors and Properties

SelectorExampleDescription
** { margin: 0; }Targets all elements
.class.btn { color: blue; }Targets elements by class
#id#header { font-size: 20px; }Targets elements by ID
elementp { line-height: 1.5; }Targets specific tags

Common CSS Properties

PropertyUsageExample
colorText colorcolor: red;
backgroundBackground color or imagebackground: #fff;
marginSpace outside an elementmargin: 10px;
paddingSpace inside an elementpadding: 15px;
font-familyFont typefont-family: Arial, sans-serif;
displayLayout typedisplay: flex;
positionElement positioningposition: absolute;
z-indexLayering elementsz-index: 10;

Box Model

  • Content: The actual content inside an element.
  • Padding: Space between content and border.
  • Border: Surrounds padding and content.
  • Margin: Space outside the border.

3. Docker Cheat Sheet

Using the Docker cheat sheet, developers can package applications and their dependencies into containers that can be run on different machines. These containers ensure consistency across different environments.

Common Docker Commands

CommandDescription
docker pull <image>Download an image from Docker Hub.
docker build -t <name> .Build an image from a Dockerfile.
docker run <image>Run a container from an image.
docker psList running containers.
docker stop <container>Stop a running container.
docker rm <container>Remove a stopped container.
docker exec -it <container>Run a command inside a running container.
docker-compose upStart services defined in a Docker Compose file.
docker-compose downStop and remove containers and networks.

Dockerfile Basics

A Dockerfile defines how to build a Docker image:

  • FROM: Base image.
  • COPY: Copies files into the container.
  • RUN: Executes commands.
  • CMD: Sets the default command to run the container.
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Example Dockerfile (for a simple HTML project):

FROM nginx:alpine

COPY . /usr/share/nginx/html

Using Docker for HTML and CSS Development

Docker can help you create isolated environments for your web projects. For example:

  1. Set Up: Use Docker to pull a lightweight web server like Nginx.
  2. Develop: Place your HTML and CSS files in the appropriate directory.
  3. Run: Use docker-compose to run your project locally.

Conclusion

This cheat sheet provides a quick reference to essential HTML tags, CSS properties, and Docker commands. Mastering these tools allows you to efficiently design, style, and deploy web applications in a consistent environment. For hands-on practice, try building a simple HTML/CSS project and running it in a Docker container using the commands outlined here.

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