The Evolution and History of the World Wide Web (WWW) ## 1. Introduction & Origin of the Web
The World Wide Web (WWW) is an information system where documents and other web resources are identified by Uniform Resource Locators (URLs), interlinked by hypertext links, and accessible via the Internet.
* **The Genesis:** Invented by British scientist **Sir Tim Berners-Lee** in **1989** while working at CERN (European Organization for Nuclear Research).
* **The Core Motivation:** Developed to
## 1. Key Features of CSS
CSS isn't just about changing colors; it is a robust design language with several powerful features:
* **Separation of Concerns:** By keeping content (HTML) separate from presentation (CSS), you can update the entire look of a website by changing just one CSS file.
* **Media Queries (Responsiveness):** CSS allows you to create fluid layouts that adapt to different screen sizes, from mobile phones to massive 4K monitors.
* **The Box Model:** Every element on a webpage
## 4. Creating Links (The Anchor Element)
Links are the core connective tissue of the World Wide Web. Hyperlinks are created using the anchor tag <a>, which is an inline element.
```html <a href="https://www.wikipedia.org" target="_blank">Visit Wikipedia</a>
```### Key Attributes of the Anchor Tag:
* **href (Hypertext Reference):** Specifies the destination URL address of the target page or resource.
* **target:** Specifies where to open the linked document: * _self (Default):
The **CSS Box Model** is the absolute foundation of web layout and design.
In CSS, virtually every HTML element is treated as an invisible, rectangular box. The Box Model is the set of rules that defines how the dimensions, spacing, and borders of these boxes behave and interact with each other.
## The Four Layers of the Box Model
Every CSS box consists of four layers, nesting inside one another like Russian nesting dolls.
Moving from the innermost layer to the outermost layer:
### 1. Content
This is
* **Wireframes:** Creating low-fidelity, black-and-white layouts that act as architectural floor plans. They establish the position of headers, navigation bars, content sections, and buttons.
* **UI/UX Mockups:** Translating wireframes into high-fidelity color prototypes using tools like Figma or Adobe XD to demonstrate user interaction flows.
### Step 3: Frontend Development (Client-Side)
The visual mockups are translated into functional, standard-compliant code that executes directly inside the
Once you have designed and built a website on your local computer, it only exists on your local hard drive. **Web Publishing** is the complete process of preparing, uploading, and maintaining your website files on the internet so the public can access them.
The most critical phase of web publishing is **Web Hosting**—renting space on a web server that stays active 24/7.
## 1. The 4 Main Types of Web Hosting
When choosing a server space, you need to pick a structure that matches your website's traffic
The Internet and the World Wide Web (WWW) are often used interchangeably in daily conversation, but they are actually two entirely different technologies. In short: **the Internet is the highway, and the World Wide Web is the traffic that drives on it.**
## 1. What is the Internet?
The Internet is a **global network of interconnected computers** and physical infrastructure. It is the underlying hardware and software framework that allows devices all over the world to communicate with one another.
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Causes:
Stress and emotional problems – Family issues, job pressure, failure or loneliness can cause depression.
Chemical imbalance in brain – Low level of serotonin and other brain chemicals may lead to depression.
Genetic factors – Depression may occur in people with family history of mental illness.
Chronic diseases – Diseases like cancer, diabetes or heart disease may increase depression.
Symptoms:
Persistent sadness and crying
Loss of interest in work and hobbies
Sleep disturbances
Fatigue
Spanien – Klima & Weinbau
Nord- Und Nordwestküste
Die Nord- und Nordwestküste Spaniens steht stark unter Einfluss des Atlantiks. Typische Merkmale: hohe Niederschläge, ganzjährig relativ gleichmäßige Temperaturen, geringe Jahresamplitude, hohe Luftfeuchtigkeit, häufig Nebel und Wolken, kühlere Sommer als im restlichen Spanien. Das Klima ist deutlich milder und feuchter als im Landesinneren oder an der Mittelmeerküste. Die kühlenden Atlantikwinde verhindern extreme Sommerhitze und