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i am frustrated from this i tried everything right but the issue still appear the exact i already search on varius platforms i did not find any sallution kindly help me to solve this exact problem(Each .main-section should have an id that matches the text of its first child, having any spaces in the child’s text replaced with underscores (_) for the id’s).

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<!-- file: index.html -->

/* file: styles.css */

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Tell us what’s happening:

i tried everything i could but the issue still remain the same for the9Each .main-section should have an id that matches the text of its first child, having any spaces in the child’s text replaced with underscores (_) for the id’s.)
kindly get me through from this task it will be appreciated

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>Your Website Title</title>
  <link rel="stylesheet" href="styles.css">
</head>

<body>
  <nav id="navbar" class="navbar">
    <header>
      AI in Web Development
    </header>
    <ul>
      <li>
        <a class="nav-link" href="#Introduction_">Introduction</a>
      </li>
      <li>
        <a class="nav-link" href="#How_AI_Can_Help_Web_Developers">How AI Can Help Web Developers</a>
      </li>
      <li>
        <a class="nav-link" href="#Learning_and_Utilizing_AI_Tools">Learning and Utilizing AI Tools</a>
      </li>
      <li>
        <a class="nav-link" href="#Benefits_of_Utilizing_AI">Benefits of Utilizing AI</a>
      </li>
      <li>
        <a class="nav-link" href="#Consideration_and_Challenges">Considerations and Challenges</a>
      </li>
      <li>
        <a class="nav-link" href="#Conclusion">Conclusion</a>
      </li>
    </ul>
  </nav>
  <main id="main-doc">
    <section id="Introduction"class="main-section">
      <header ">Introduction</header>
      <article>
        <p>
          The world of web development is constantly evolving, with new technologies and frameworks emerging all the time. Keeping your skills sharp can be a challenge. Artificial intelligence (AI) offers exciting possibilities for web developers looking to enhance their skillset and streamline their workflow. This document explores how AI can empower you to become a more efficient and effective web developer.</p>
          <p>The ever-growing demand for innovative and dynamic web experiences pushes developers to constantly adapt and refine their skillset.  While the core principles of web development remain strong, the tools and methodologies employed are constantly evolving.  Keeping pace with this rapid change can be daunting, but fear not! Artificial intelligence (AI) is emerging as a game-changer for web developers, offering a powerful array of capabilities to enhance efficiency, improve code quality, and elevate user experiences.
         </p>
        </article>
      </section>
      <section  id="How_AI_Can_Help_Web_Developers" class="main-section">
        <header>How AI Can Help Web Developers</header>
        <article>
          <p>AI can assist web developers in various aspects, including:</p>
          <ul>
            <li><strong>Code Generation and Completion:</strong> AI-powered tools can automate repetitive coding tasks.
              They can generate boilerplate code, suggest code completions, and even write entire sections of code based
              on your specifications. This frees up your time to focus on more complex problems and creative aspects of
              development.</li>
          </ul>
          <p>Here's a more concrete example of code generation and completion with JavaScript, using a fictional AI
            library <strong>(ai-code-gen)</strong>:</p>
          <code>const userInput = document.getElementById('userInput');
const generateButton = document.getElementById('generateButton');
const codeOutput = document.getElementById('codeOutput');

generateButton.addEventListener('click', async () => {
  const userPrompt = userInput.value;

  // Simulate sending the prompt to an AI code generation service
  const generatedCode = await aiCodeGen.generateCode(userPrompt);

  codeOutput.textContent = generatedCode;
});</code>
          <p><strong>Explanation:</strong></p>
          <p> 1. <strong>HTML Setup:</strong></p>
          <ul>
            <li>We have input (userInput) for the user to enter a prompt describing the desired code.</li>
            <li>A button (generateButton) triggers the code generation process.</li>
            <li>Finally, an output element (codeOutput) displays the generated code.</li>
          </ul>
          <p>2. <strong>JavaScript Functionality:</strong>
          <ul>
            <li>Clicking the generateButton triggers an asynchronous function.</li>
            <li>The function retrieves the user prompt from the userInput element.</li>
            <li>We simulate sending the prompt to an AI code generation service using the fictional
              aiCodeGen.generateCode function (in reality, you'd use an existing AI library). This function is
              asynchronous, allowing the code to wait for the AI response.</li>
            <li>Once the AI responds with generated code, it's displayed in the (codeOutput) element.</li>
          </ul>
          <p><strong>Example User Prompt:</strong></p>
          <p>Imagine the user enters the following prompt:</p>
          <p><q>Write a function to calculate the area of a rectangle.</q></p>
          <p><strong>Potential AI-Generated Code (JavaScript):</strong></p>
          <code>function calculateRectangleArea(width, height) {
  if (width <= 0 || height <= 0) {
    throw new Error("Width and height must be positive numbers");
  }
  return width * height;
}
</code>
          <p>This is a basic example, but it demonstrates how AI can generate functional code based on a user's natural
            language description. It's important to note that the generated code might require review and refinement
            depending on the complexity of the prompt</p>
          <p><strong>Testing and Debugging:</strong></p>
          <p>AI can help identify bugs and potential issues in your code. Some tools can analyze code for syntax errors,
            logical inconsistencies, and potential security vulnerabilities. This can significantly reduce debugging
            time and effort.</p>
          <p>Here are two examples for Testing and Debugging with codes:</< /p>
          <p><strong>Testing a simple JavaScript function (Unit Testing):</strong></p>
          <code>
    function addNumbers(num1, num2) {
      return num1 + num2;
    }

    // Test Cases (Unit Testing)
    function testAddNumbers() {
      const testCases = [
        { a: 5, b: 3, expected: 8 },
        { a: -2, b: 10, expected: 8 },
        { a: 0, b: 0, expected: 0 },
      ];

      for (const testCase of testCases) {
        const result = addNumbers(testCase.a, testCase.b);
        if (result !== testCase.expected) {
          console.error(`Test failed! Expected: ${testCase.expected}, Actual: ${result}`);
        } else {
          console.log(`Test passed! Expected: ${testCase.expected}, Actual: ${result}`);
        }
      }
    }

    testAddNumbers();

</code>
          <code><!DOCTYPE html>
</code>
          <p><strong>Debugging a JavaScript error:</strong></p>
          <code>function calculateArea(radius) {
  // Bug: Incorrect formula used for circle area
  return radius * radius; // Should be PI * radius * radius
}

const circleRadius = 5;
const area = calculateArea(circleRadius);
console.log("Area of the circle:", area);
</code>
          <p><strong>Explanation:</strong></p>
          <p>1. This code defines a function calculateArea that calculates the area of a circle. However, it contains a
            bug: it uses radius * radius instead of the correct formula (PI * radius * radius).</p>
          <p>2. When you run this code, you might encounter an error message in the browser console indicating that the
            calculated area is incorrect.</p>
          <p><strong>Debugging Techniques:</strong></p>
          <ul>
            <li><strong>Console Logs:</strong> You can add console.log statements throughout your code to print variable
              values and track the execution flow. This helps identify where the issue might be occurring.</li>
            <li><strong>Browser Developer Tools:</strong>
              Most browsers offer built-in developer tools that allow you to set breakpoints in your code. A breakpoint
              pauses execution at a specific line, allowing you to inspect variable values and step through the code
              line by line. This can be helpful in pinpointing the exact cause of the error.</li>
            <li><strong>Rubber Duck Debugging: </strong>Sometimes, explaining the problem to someone else (even an
              inanimate object like a rubber duck!) can help you gain a fresh perspective and identify the issue
              yourself.</li>
          </ul>
        </article>
    </section>
    <section id="Learning_and_Utilizing_AI_Tools" class="main-section">
      <header>Learning and Utilizing AI Tools</header>
      <article>
        <p>There are several ways to get started with AI in web development:</p>
        <ul>
          <li><strong>Explore Online Resources:</strong>
            Numerous online resources offer tutorials, articles, and courses on using AI tools for web development.
            Platforms like Google AI, TensorFlow, and PyTorch provide extensive documentation and learning materials.
          </li>
          <li><strong>Experiment with Open-Source Tools:</strong>Many open-source AI libraries and frameworks are
            readily available. Experimenting with these tools allows you to gain practical experience and understand how
            they can be integrated into your workflow.</li>
          <li><strong>Consider Cloud-Based AI Services: </strong>Cloud platforms like Google Cloud AI, Amazon Web
            Services (AWS) AI, and Microsoft Azure offer pre-built AI models and services that can be easily integrated
            into your development projects.</li>
        </ul>
      </article>
    </section>
    <section id="Benefits_of_Utilizing_AI" class="main-section">
      <header>Benefits of Utilizing AI</header>
      <article>
        <header>Benefits of Utilizing AI</header>
        <ul>
          <li><strong>Increased Efficiency:</strong>AI automates repetitive tasks, freeing up your time for more
            strategic and creative work.</li>
          <li><strong>Improved Code Quality: </strong>AI tools can help identify and fix bugs and potential issues,
            leading to cleaner and more reliable code.</li>
          <li><strong>Enhanced User Experiences:</strong>AI can personalize user interfaces and content, leading to a
            more engaging and satisfying experience for your users.</li>
          <li><strong>Faster Development Cycles: </strong>By automating tasks and streamlining workflows, AI can help
            you complete projects faster and meet deadlines more efficiently.</li>
          <li><strong>Staying Ahead of the Curve:</strong>By embracing AI, you can stay current with the latest
            advancements and future-proof your web development skills.</li>
        </ul>
      </article>
    </section>
    <section  id="Consideration_and_Challenges" class="main-section">
      <header>Considerations and Challenges</header>
      <article>
        <ul>
          <li><strong>Learning Curve: </strong>There's a learning curve associated with understanding and utilizing AI
            tools effectively.</li>
          <li><strong>Potential for Bias:</strong>AI models can sometimes inherit biases from the data they are trained
            on. You'll need to be mindful of potential biases and ensure fair and ethical implementation.</li>
          <li><strong>Job displacement Concerns: </strong>While AI automates tasks, it's unlikely to completely replace
            web developers. Instead, it will shift the focus towards higher-level skills and problem-solving abilities.
          </li>
        </ul>
      </article>
    </section>
    <section id="Conclusion" class="main-section">
      <header>Conclusion</header>
      <article>
        <p>AI presents a powerful tool for web developers looking to elevate their skills and streamline their workflow.
          By embracing AI and continuously learning, you can become a more efficient, effective, and future-proof
          developer. Remember, AI should be seen as a collaborator, augmenting your skills and creativity, not replacing
          them.
        </p>
      </article>
    </section>
  </main>
</body>

/* file: styles.css */

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Challenge Information:

Technical Documentation Page - Build a Technical Documentation Page

this one doesn’t match

thanks a lots @ilenia