Technical Documentation Page - Build a Technical Documentation Page and flex-direction

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I almost finished the project. I only need to solve "Your Technical Documentation project should use at least one media query. I tried to add flex-direction: column to .container so that to make #navbar and #main-doc aligned vertically and I tried to put other properties and changed it, but it doesn’t work. How could i solve this?

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="description" content="Technical Documentation Project">
  <meta name="keywords" content="HTML, CSS">
  <meta name="author" content="realryankim">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="styles.css" />
  <title>Technical Documentationi Page</title>
</head>

<body>
  <div class="container">
    <!-- navbar -->
    <nav id="navbar">
      <header>JS Documentation</header>
      <ul>
        <li><a class="nav-link" href="#Introduction">Introduction</a></li>
        <li><a class="nav-link" href="#what_you_should_already_know">What you should already know</a></li>
        <li><a class="nav-link" href="#JavaScript_and_Java">Javascript and Java</a></li>
        <li><a class="nav-link" href="#Hello_world">Hello world</a></li>
        <li><a class="nav-link" href="#Variables">Variables</a></li>
        <li><a class="nav-link" href="#Declaring_variables">Declaring variables</a></li>
        <li><a class="nav-link" href="#Variable_scope">Variable scope</a></li>
        <li><a class="nav-link" href="#Global_variables">Global variables</a></li>
        <li><a class="nav-link" href="#Constants">Constants</a></li>
        <li><a class="nav-link" href="#Data_types">Data types</a></li>
        <li><a class="nav-link" href="#if...else_statement">if...else statement</a></li>
        <li><a class="nav-link" href="#while_statement">while statement</a></li>
        <li><a class="nav-link" href="#Function_declarations">Function declarations</a></li>
        <li><a class="nav-link" href="#Reference">Reference</a></li>
      </ul>
    </nav>
    <!-- main -->
    <main id="main-doc">
      <section class="main-section" id="Introduction">
        <header>Introduction</header>
        <article>
          <p>JavaScript is a cross-platform, object-oriented scripting language. It is a small and lightweight language.
            Inside a host environment (for example, a web browser), JavaScript can be connected to the objects of its
            environment to provide programmatic control over them.</p>
          <p>JavaScript contains a standard library of objects, such as Array, Date, and Math, and a core set of
            language elements such as operators, control structures, and statements. Core JavaScript can be extended for
            a variety of purposes by supplementing it with additional objects; for example:</p>
          <ul>
            <li>Client-side JavaScript extends the core language by supplying objects to control a browser and its
              Document Object Model (DOM). For example, client-side extensions allow an application to place elements on
              an HTML form and respond to user events such as mouse clicks, form input, and page navigation.</li>
            <li>Server-side JavaScript extends the core language by supplying objects relevant to running JavaScript on
              a server. For example, server-side extensions allow an application to communicate with a database, provide
              continuity of information from one invocation to another of the application, or perform file manipulations
              on a server.</li>
          </ul>
        </article>
      </section>
      <section class="main-section" id="what_you_should_already_know">
        <header>What you should already know</header>
        <article>
          <p>This guide assumes you have the following basic background:</p>
          <ul>
            <li>A general understanding of the Internet and the World Wide Web (WWW).</li>
            <li>Good working knowledge of HyperText Markup Language (HTML).</li>
            <li>Some programming experience. If you are new to programming, try one of the tutorials linked on the main
              page about JavaScript.</li>
          </ul>
        </article>
      </section>
      <section class="main-section" id="JavaScript_and_Java">
        <header>Javascript and Java</header>
        <article>
          <p>JavaScript and Java are similar in some ways but fundamentally different in some others. The JavaScript
            language resembles Java but does not have Java's static typing and strong type checking. JavaScript follows
            most Java expression syntax, naming conventions and basic control-flow constructs which was the reason why
            it was renamed from LiveScript to JavaScript.</p>
          <p>In contrast to Java's compile-time system of classes built by declarations, JavaScript supports a runtime
            system based on a small number of data types representing numeric, Boolean, and string values. JavaScript
            has a prototype-based object model instead of the more common class-based object model. The prototype-based
            model provides dynamic inheritance; that is, what is inherited can vary for individual objects. JavaScript
            also supports functions without any special declarative requirements. Functions can be properties of
            objects, executing as loosely typed methods.</p>
          <p>JavaScript is a very free-form language compared to Java. You do not have to declare all variables,
            classes, and methods. You do not have to be concerned with whether methods are public, private, or
            protected, and you do not have to implement interfaces. Variables, parameters, and function return types are
            not explicitly typed.</p>
        </article>

      </section>
      <section class="main-section" id="Hello_world">
        <header>Hello world</header>
        <article>
          <p>To get started with writing JavaScript, open the Scratchpad and write your first "Hello world" JavaScript
            code:</p>

          <code>function greetMe(yourName) { alert("Hello " + yourName); }
            greetMe("World");</code>

        </article>
      </section>
      <section class="main-section" id="Variables">
        <header>Variables</header>
        <article>
          <p>You use variables as symbolic names for values in your application. The names of variables, called
            identifiers, conform to certain rules.</p>
          <p>A JavaScript identifier must start with a letter, underscore (_), or dollar sign ($); subsequent characters
            can also be digits (0-9). Because JavaScript is case sensitive, letters include the characters "A" through
            "Z" (uppercase) and the characters "a" through "z" (lowercase).</p>
          <p>You can use ISO 8859-1 or Unicode letters such as å and ü in identifiers. You can also use the Unicode
            escape sequences as characters in identifiers. Some examples of legal names are Number_hits, temp99, and
            _name.</p>
        </article>
      </section>
      <section class="main-section" id="Declaring_variables">
        <header>Declaring variables</header>
        <article>
          <p>You can declare a variable in three ways:</p>
          <p>With the keyword var. For example,</p>
          <code>var x = 42.</code>
          <p>By simply assigning it a value. For example,</p>
          <code>x = 42.</code>
          <p>This always declares a global variable. It generates a strict JavaScript warning. You shouldn't use this
            variant.</p>
          <p>With the keyword let. For example,</p>
          <code>let y = 13.</code>
          <p>This syntax can be used to declare a block scope local variable. See Variable scope below.</p>
        </article>
      </section>
      <section class="main-section" id="Variable_scope">
        <header>Variable scope</header>
        <article>
          <p>When you declare a variable outside of any function, it is called a global variable, because it is
            available to any other code in the current document. When you declare a variable within a function, it is
            called a local variable, because it is available only within that function.</p>
          <p>JavaScript before ECMAScript 2015 does not have block statement scope; rather, a variable declared within a
            block is local to the function (or global scope) that the block resides within. For example the following
            code will log 5, because the scope of x is the function (or global context) within which x is declared, not
            the block, which in this case is an if statement.</p>
          <code>if (true) { var x = 5; } console.log(x); // 5</code>
          <p>This behavior changes, when using the let declaration introduced in ECMAScript 2015.</p>
          <code>if (true) { let y = 5; } console.log(y); // ReferenceError: y is
not defined</code>

        </article>

      </section>
      <section class="main-section" id="Global_variables">
        <header>Global variables</header>
        <article>
          <p>Global variables are in fact properties of the global object. In web pages the global object is window, so
            you can set and access global variables using the window.variable syntax.</p>
          <p>Consequently, you can access global variables declared in one window or frame from another window or frame
            by specifying the window or frame name. For example, if a variable called phoneNumber is declared in a
            document, you can refer to this variable from an iframe as parent.phoneNumber.</p>
        </article>

      </section>
      <section class="main-section" id="Constants">
        <header>Constants</header>
        <article>
          <p>You can create a read-only, named constant with the const keyword. The syntax of a constant identifier is
            the same as for a variable identifier: it must start with a letter, underscore or dollar sign and can
            contain alphabetic, numeric, or underscore characters.</p>
          <code>const PI = 3.14;</code>
          <p>A constant cannot change value through assignment or be re-declared while the script is running. It has to
            be initialized to a value.</p>

          <p>The scope rules for constants are the same as those for let block scope variables. If the const keyword is
            omitted, the identifier is assumed to represent a variable.</p>

          <p>You cannot declare a constant with the same name as a function or variable in the same scope. For example:
          </p>
          <code>// THIS WILL CAUSE AN ERROR function f() {}; const f = 5; // THIS
WILL CAUSE AN ERROR ALSO function f() { const g = 5; var g;
//statements }</code>
          <p>However, object attributes are not protected, so the following statement is executed without problems.</p>
          <code>const MY_OBJECT = {"key": "value"}; MY_OBJECT.key =
"otherValue";</code>
        </article>
      </section>
      <section class="main-section" id="Data_types">
        <header>Data types</header>
        <article>
          <p>The latest ECMAScript standard defines seven data types:
          <p>
          <ul>
            <li>Six data types that are primitives:</li>
            <ul>
              <li>Boolean. true and false.</li>
              <li>null. A special keyword denoting a null value. Because JavaScript is case-sensitive, null is not the
                same as Null, NULL, or any other variant.</li>
              <li>undefined. A top-level property whose value is undefined.</li>
              <li>Number. 42 or 3.14159.</li>
              <li>String. "Howdy"</li>
              <li>Symbol (new in ECMAScript 2015). A data type whose instances are unique and immutable.</li>
            </ul>
            <li>and Object</li>
          </ul>
          <p>Although these data types are a relatively small amount, they enable you to perform useful functions with
            your applications. Objects and functions are the other fundamental elements in the language. You can think
            of objects as named containers for values, and functions as procedures that your application can perform.
          </p>
        </article>

      </section>
      <section class="main-section" id="if...else_statement">
        <header>if...else statement</header>
        <article>
          <p>Use the if statement to execute a statement if a logical condition is true. Use the optional else clause to
            execute a statement if the condition is false. An if statement looks as follows:</p>
          <code>if (condition) { statement_1; } else { statement_2; }</code>
          <p>condition can be any expression that evaluates to true or false. See Boolean for an explanation of what
            evaluates to true and false. If condition evaluates to true, statement_1 is executed; otherwise, statement_2
            is executed. statement_1 and statement_2 can be any statement, including further nested if statements.</p>
          <p>You may also compound the statements using else if to have multiple conditions tested in sequence, as
            follows:</p>

          <code>if (condition_1) { statement_1; } else if (condition_2) {
statement_2; } else if (condition_n) { statement_n; } else {
statement_last; }</code>
          <p>In the case of multiple conditions only the first logical condition which evaluates to true will be
            executed. To execute multiple statements, group them within a block statement ({ ... }) . In general, it's
            good practice to always use block statements, especially when nesting if statements:</p>
          <code>if (condition) { statement_1_runs_if_condition_is_true;
statement_2_runs_if_condition_is_true; } else {
statement_3_runs_if_condition_is_false;
statement_4_runs_if_condition_is_false; }</code>
          <p>It is advisable to not use simple assignments in a conditional expression, because the assignment can be
            confused with equality when glancing over the code. For example, do not use the following code:</p>
          <code>if (x = y) { /* statements here */ }</code>
          <p>If you need to use an assignment in a conditional expression, a common practice is to put additional
            parentheses around the assignment. For example:</p>
          <code>if ((x = y)) { /* statements here */ }</code>
        </article>

      </section>
      <section class="main-section" id="while_statement">
        <header>while statement</header>
        <article>
          <p>A while statement executes its statements as long as a specified condition evaluates to true. A while
            statement looks as follows:</p>
          <code>while (condition) statement</code>
          <p>If the condition becomes false, statement within the loop stops executing and control passes to the
            statement following the loop.</p>
          <p>The condition test occurs before statement in the loop is executed. If the condition returns true,
            statement is executed and the condition is tested again. If the condition returns false, execution stops and
            control is passed to the statement following while.</p>

          <p>To execute multiple statements, use a block statement ({ ... }) to group those statements.</p>

          <p>Example:</p>
          <p>The following while loop iterates as long as n is less than three:</p>

          <code>var n = 0; var x = 0; while (n < 3) { n++; x += n; }</code>
          <p>With each iteration, the loop increments n and adds that value to x. Therefore, x and n take on the
            following values:</p>

          <ul>
            <li>After the first pass: n = 1 and x = 1</li>
            <li>After the second pass: n = 2 and x = 3</li>
            <li>After the third pass: n = 3 and x = 6</li>
          </ul>
          <p>After completing the third pass, the condition n < 3 is no longer true, so the loop terminates.</p>
        </article>

      </section>
      <section class="main-section" id="Function_declarations">
        <header>Function declarations</header>
        <article>
          <p>A function definition (also called a function declaration, or function statement) consists of the function
            keyword, followed by:</p>
          <ul>
            <li>The name of the function.</li>
            <li>A list of arguments to the function, enclosed in parentheses and separated by commas.</li>
            <li>The JavaScript statements that define the function, enclosed in curly brackets, { }.</li>
          </ul>
          <p>For example, the following code defines a simple function named square:</p>

          <code>function square(number) { return number * number; }</code>
          <p>The function square takes one argument, called number. The function consists of one statement that says to
            return the argument of the function (that is, number) multiplied by itself. The return statement specifies
            the value returned by the function.</p>

          <code>return number * number;</code>
          <p>Primitive parameters (such as a number) are passed to functions by value; the value is passed to the
            function, but if the function changes the value of the parameter, this change is not reflected globally or
            in the calling function.</p>
        </article>

      </section>
      <section class="main-section" id="Reference">
        <header>Reference</header>
        <article>
          <ul>
            <li>All the documentation in this page is taken from <a
                href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide" target="_blank">MDN</a></li>
          </ul>
        </article>

      </section>

    </main>
  </div>
</body>

</html>
* {
  box-sizing: border-box;
  font-family: sans-serif;
  margin: 0;
  scroll-behavior: smooth;
}

html {
  scroll-behavior: smooth;
}

.container {
  display: flex;
  line-height: 1.8;
  height: 100%;
}

#navbar {
  border-right: 3px solid #7e7e7e;
  height: 100%;
  min-width: 300px;
  z-index: 1;
  position: fixed;
  top: 0;
  left: 0;
  overflow-x: hidden;
}

#navbar header {
  font-size: 1.6em;
  font-weight: bold;
  padding: 14px 30px 18px 30px;
}

#navbar ul {
  padding: 0;
    list-style-type: none;
}

#navbar ul li {
  padding: 8px 30px;
  border-top: 1px solid #000;
}

#navbar ul li a {
  color: #3a3b3c;
  text-decoration: none;
}

#main-doc {
  height: 100%;
  margin-left: 300px;
  padding: 30px 30px 18px 30px;
}

#main-doc header {
    font-size: 1.6em;
    font-weight: 600;
}

.main-section article {
  margin: 15px;
  font-size: 0.95em;
}

.main-section article p,.main-section article ul li{
  margin-bottom: 10px;
}

.main-section article ul {
  margin-left: 15px;
}

.main-section article code{
    display: block;
    padding: 15px;
    margin: 10px;
    border-radius: 5px;
    white-space: pre-line;
    font-family: monospace;
    background-color: #f7f7f7;
    color: #3b3b3b;
}

/* @media (max-width: 815px) {
  .container {
    flex-direction: column;
  }
} */

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36

Challenge: Technical Documentation Page - Build a Technical Documentation Page

Link to the challenge:

@realryankim what do you mean by “it doesn’t work”? The test is failing on the media query requirement or your media query code is not applying to your project?

I add more information for you. please visit original project below.

  1. freecodecamp original project
    https://technical-documentation-page.freecodecamp.rocks/#JavaScript_and_Java

if you reduce the screen size to 815px, navbar goes above and main section goes below.

I would like to make my project like the freecodecamp original project.

I thought that if i give display: flex and justify-content: column to container div element that has both elements which are navbar and main, this will place two elements vertically. But, it doesn’t work as I expected.

  1. Codepen with my code
    https://codepen.io/realryankim/pen/wvxMjXJ

I came up with an idea while I am doing learn-css-variables-by-building-a-city-skyline, and I solved the problem by adding more media query properties and values, now it is working! Phew…

@media (max-width: 815px) {
  .container {
    display: flex;
    align-items: flex-end;
    flex-direction: column;
  }

  #navbar {
    position: absolute;
    width: 100%;
    height: 300px;
    border-right: none;
    border-bottom: 3px solid #7e7e7e;
  }

  #main-doc {
    position: relative;
    width: 100%;
    margin-top: 300px;
  }
}

I am still not sure that why it worked with align-items: flex-end;, but I am happy with the result.

Happy Coding! :sparkles:

1 Like

Good job! :confetti_ball: Happy coding!

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