// JavaScript code to embed SVG content
const someSVG = `
<svg width="128" height="128" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
    <style>
        .interactive.from-svg {
            fill: red;
            transition: fill 200ms ease;
        }

        .animated.from-svg{
            animation: 3s infinite alternate changecolor;
        }

        @keyframes changecolor{
            from {
                fill: green;
            }
            to {
                fill: purple;
            }
        }
    </style>
    <circle class="interactive from-doc" cx="25" cy="25" r="25"></circle>
    <circle class="animated from-doc" cx="75" cy="25" r="25"></circle>
    <circle class="interactive from-svg" cx="25" cy="75" r="25"></circle>
    <circle class="animated from-svg" cx="75" cy="75" r="25"></circle>
</svg>
`;

// Generating data URI for the SVG
const dataUri = `data:image/svg+xml;base64,${btoa(someSVG)}`;

// Creating image, background, and iframe elements
const imgContainer = document.getElementById("img-container"),
  img = document.createElement("img");
imgContainer.appendChild(img);
img.src = dataUri;

const backgroundImageContainer = document.getElementById("background-image-container"),
  backgroundImage = document.createElement("div");
backgroundImageContainer.appendChild(backgroundImage);
backgroundImage.style.width = "128px";
backgroundImage.style.height = "128px";
backgroundImage.style.backgroundImage = `url(${dataUri})`;

const iframeContainer = document.getElementById("iframe-container"),
  iframe = document.createElement("iframe");
iframeContainer.appendChild(iframe);
iframe.src = dataUri;

// CSS code for styling and animations
main {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

section {
  flex-basis: 50%;
  flex-grow: 1;
  flex-shrink: 0;
}

.interactive.from-doc {
  fill: red;
  transition: fill 200ms ease;
}

.animated.from-doc {
  animation: 3s infinite alternate changecolor;
}

@keyframes changecolor {
  from {
    fill: green;
  }
  to {
    fill: purple;
  }
}

li.pro {
  color: green;
}

li.con {
  color: red;
}

<h1><code>&lt;svg&gt;</code> Usage Comparison</h1>
<main>
  <section id="external">
    <h2><code>&lt;img&gt;</code></h2>
    <div id="img-container"></div>
    <pre><code>&lt;img src="some.svg"&gt;</code></pre>
    <ul>
      <li class="con">Does not receive <strong>any</strong> style from top level document</li>
      <li class="con">Does not utilize CSS Interactions such as <code>:hover</code></li>
      <li class="pro">Will use CSS Animations if they are defined within the svg element's style</li>
    </ul>
  </section>
  <section>
    <h2><code>background-image</code></h2>
    <div id="background-image-container"></div>
    <pre><code>
&lt;style&gt;
.rule{
    background-image: url(some.svg);
}
&lt;/style&gt;
&lt;div class="rule"&gt;&lt;/div&gt;
</code></pre>
    <ul>
      <li class="con">Does not receive <strong>any</strong> style from top level document</li>
      <li class="con">Does not utilize CSS Interactions</li>
      <li class="pro">Will use CSS Animations if they are defined within the svg element's style</li>
    </ul>
  </section>
  <section>
    <h2><code>&lt;iframe&gt;</code></h2>
    <div id="iframe-container"></div>
    <pre><code>&lt;iframe src="some.svg"&gt;</code></pre>
    <ul>
      <li class="con">Does not receive <strong>any</strong> style from top level document</li>
      <li class="pro">Will use CSS Interactions if they are defined within the svg element's style</li>
      <li class="pro">Will use CSS Animations if they are defined within the svg element's style</li>
    </ul>
  </section>
  <section>
    <h2>Inline <code>&lt;svg&gt;</code></h2>
    <svg width="128" height="128" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
                <style>
                    .interactive.from-svg {
                        fill: red;
                        transition: fill 200ms ease;
                    }

                    .animated.from-svg{
                        animation: 3s infinite alternate changecolor;
                    }

                    @keyframes changecolor{
                        from {
                            fill: green;
                        }
                        to {
                            fill: purple;
                        }
                    }
                </style>
                <circle class="interactive from-doc" cx="25" cy="25" r="25"></circle>
                <circle class="animated from-doc" cx="75" cy="25" r="25"></circle>
                <circle class="interactive from-svg" cx="25" cy="75" r="25"></circle>
                <circle class="animated from-svg" cx="75" cy="75" r="25"></circle>
            </svg>
    <pre><code>&lt;svg&gt;...&lt;/svg&gt;</code></pre>
    <ul>
      <li class="pro">Receives <strong>all</strong> style rules from top level document</li>
      <li class="pro">Will use CSS Interactions if they are defined within the svg element's style</li>
      <li class="pro">Will use CSS Animations if they are defined within the svg element's style</li>
    </ul>
  </section>
</main>