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HTML

              
                <main id="main-doc">
<body>
<nav class="left" id="navbar">
        <header class="nav-header">HTML Basics</header>
        <a class="nav-link" href="#Introduction">Introduction</a>
        <a class="nav-link" href="#Elements">Elements</a>
        <a class="nav-link" href="#Headers">Headers</a>
        <a class="nav-link" href="#Paragraphs">Paragraphs</a>
        <a class="nav-link" href="#Anchors">Anchors</a>
        <a class="nav-link" href="#Lists">Lists</a>
        <a class="nav-link" href="#Dividers">Dividers</a>
        <a class="nav-link" href="#Images">Images</a>
        <a class="nav-link" href="#Horizontal_Rules">Horizontal Rules</a>
        <a class="nav-link" href="#Reference">Reference</a>
</nav>

<section class="main-section" id="Introduction">
    <header class="section-headers">
        Introduction
    </header>
        <p>
            HTML(Hypertext Markup Language) is a standarized markup language that defines the structure of web pages. 
            HTML was initially released in 1993 as a way for people that weren't experienced in SGML(Standard Generalized Markup Language) to exchange and publish technical documents.
            Today HTML is most commonly used by web developers in order to create and service websites and web applications. 
            There are many different elements that are used within HTML but this guide will only be covering the basics. 
        </p>

</section>

<section class="main-section" id="Elements">
    <header class="section-headers">
        Elements
    </header>
        <p>
            An element is an individual component in HTML document. Elements represent a meaning for that particular component on the document and we will go over the basics throughout this guide.
            Each element in HTML can also have attributes attached to them. Some are specific for certain elements and some are global like these: 
            <ul>
                <li><code>id</code> - Denotes the unique ID of an element in a page.</li>
                <li><code>class</code> - Denotes a CSS class of an element which can be used to style multiple elements together.</li>
                <li><code>style</code> - Denotes the style(s) to apply to an element.</li>
            </ul>
        </p>

</section>

<section class="main-section" id="Headers">
    <header class="section-headers">
        Headers
    </header>
        <p>
            With headers, you have 6 different types you can choose from. Starting from <code>h1</code> all the way down to <code>h6</code>. 
            The topmost heading in HTML is <code>h1</code> and will have the largest text while <code>h6</code> will be the most inner heading with the smallest text. 
            
        </p>

</section>
    

<section class="main-section" id="Paragraphs">
    <header class="section-headers">
        Paragraphs
    </header>
        <p>
            The <code>p</code> tag represents a paragraph. 
            Paragraphs are usually used to represent blocks of text but can also be used as strutcural grouping of related content like images or forms.
        </p>

</section>


<section class="main-section" id="Anchors">
    <header class="section-headers">
        Anchors
    </header>
        <p>
            The <code>a</code> tag represents an anchor. Anchors are used as a piece of text that marks the beginning and/or end of a hypertext link. 
            Anchor tags have many different attributes but we will just be going over the two most common below: 
                <ol>
                    <li><code>href</code> - href refers to a destination provided by the link such as another page on the website or another website altogether</li>
                    <li><code>name</code> - name is used as an identifier for many elements including anchors. Identifiers are used for styling an element in CSS and in anchors they can be used to allow another document to reference that anchor by using the unique identifier</li>
                </ol>
            All attributes are optional, however, without an <code>href</code> or <code>name</code> attribute, the <code>a</code> tag will not be useful.
        </p>

</section>


<section class="main-section" id="Lists">
    <header class="section-headers">
        Lists
    </header>
        <p>
            Lists are groups of related items. There are three different kinds of lists in HTML: <code>ul</code>, <code>ol</code>, and <code>dl</code>.
                <ul>
                    <li><code>ul</code> is an unordered list and is used to group related items in no particular order. Each list item in an unordered list is defined with <code>li</code> and will be represented with bullets.</li>
                    <li><code>ol</code> is an ordered list and is used to group related items in a set order. Each list item in an ordered list is defined with <code>li</code> as well but will be represented with numbers.</li>  
                    <li><code>dl</code> is a description list and is used to list terms while also providing a description of each term. Each term will be defined with a <code>dt</code> tag and the description for each term will be defined with a <code>dd</code>.</li>
                </ul>
            We've seen examples of both unordered lists and ordered lists but let's take a look at an example of a description list below:
                        <dl>
                            <dt>Coffee</dt>
                            <dd>- black hot drink</dd>
                            <dt>Milk</dt>
                            <dd>- white cold drink</dd>
                        </dl>
        </p>

</section>


<section class="main-section" id="Dividers">
    <header class="section-headers">
        Dividers
    </header>
        <p>
           Dividers, or more commonly known as divs, are used to define a division or a section. 
           The <code>div</code> tag is used to create the container in which we place HTML elements.
           The <code>div</code> tag is easily styled using a class or id attribute which are similar to the name attribute we saw earlier. 
           Divs can be used as a container for any sort of content, which makes them a versatile tool when writing HTML. 
        </p>

</section>


<section class="main-section" id="Images">
    <header class="section-headers">
        Images
    </header>
        <p>
            The <code>img</code> tag is used to embed an image into a website. The <code>img</code> tag is empty with only attributes and does not require a closing tag. 
            The <code>img</code> tag has two required attributes:
                <ul>
                    <li><code>src</code> - which specifies the path to the image(where the image is coming from)</li>
                    <li><code>alt</code> - which provides alternative text for the image in case the image doesn't load as intended and for accessibility purposes</li>
                </ul>
        </p>

</section>


<section class="main-section" id="Horizontal_Rules">
    <header class="section-headers">
        Horizontal Rules
    </header>
        <p>
            The <code>hr</code> tag represents a thematic break which is used to separate paragraph level elements. A common use for the <code>hr</code> tag is to separate differents topics within a website. 
            Horizontal rules are visually represented by a horizontal line across the website. 
        </p>

</section>


<section class="main-section" id="Reference">
    <header class="section-headers">
        Reference
    </header>
        <p>
            All documentation in this page is taken from <a href="https://www.w3schools.com/html/default.asp" target="_blank">w3schools</a> and <a href="https://en.wikipedia.org/wiki/HTML" target="_blank">Wikipedia</a>.
        </p>
</section>

</body>
</main>
              
            
!

CSS

              
                html {
  scroll-behavior: smooth;
}

h2 {
    padding: 10px;
}

body {
    background-color: #001e38;
    color: white; 
}

.left {
    height: 100%;
    width: 200px;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgb(255, 255, 255);
    overflow-x: hidden;
    padding-top: 20px;
    border-right: black;
    border-width: 1px;
    border-style: solid;
    background-color: #010c1e;
}

.left a {
    padding: 6px 8px 6px 16px; 
    text-decoration: none;  
    font-size: 25px;
    color: rgb(255, 255, 255);
    display: block; 
}

.left a:hover {
    color: rgb(177, 73, 168);
}

.main-section {
    margin-left: 200px; 
    padding: 0px 10px; 
}

@media screen and (max-height: 450px) {
    .left {padding-top: 15px;}
    .left a {font-size: 18px;}
}

.section-headers {
    font-size: 30px;
}

.nav-header {
    font-size: 26px;
    display: block;
    padding: 6px 8px 6px 16px; 
}
 
.nav-link {
    border-top: solid 1px white; 
    border-bottom: solid 1px white; 
}

.nav-link:last-child {
    border-bottom: none;
} 

#navbar {
    border: solid 1px white; 
}
              
            
!

JS

              
                // !! IMPORTANT README:

// You may add additional external JS and CSS as needed to complete the project, however the current external resource MUST remain in place for the tests to work. BABEL must also be left in place. 

/***********
INSTRUCTIONS:
  - Select the project you would 
    like to complete from the dropdown 
    menu.
  - Click the "RUN TESTS" button to
    run the tests against the blank 
    pen.
  - Click the "TESTS" button to see 
    the individual test cases. 
    (should all be failing at first)
  - Start coding! As you fulfill each
    test case, you will see them go   
    from red to green.
  - As you start to build out your 
    project, when tests are failing, 
    you should get helpful errors 
    along the way!
    ************/

// PLEASE NOTE: Adding global style rules using the * selector, or by adding rules to body {..} or html {..}, or to all elements within body or html, i.e. h1 {..}, has the potential to pollute the test suite's CSS. Try adding: * { color: red }, for a quick example!

// Once you have read the above messages, you can delete all comments. 

              
            
!
999px

Console