1.CSS-5
<h2 id="css5"></h2>
<style>#css5::before{content:"1.CSS-5";}</style>
2.ATTR-5
<h2 data-title="2.ATTR-5" id="attr5"></h2>
<style>#attr5::before{content:attr(data-title);}</style>
3.IMG-5
<h2><img src="path/to/title5.png" alt=""></h2>
4.B64-5
// PHP GD ⇒ base64 image (see code sample)
5.SVGEM-5
<object data="title5.svg" type="image/svg+xml"></object>
6.CAN-5
<canvas id="can5" width="400" height="60"></canvas>
<script>
const c=document.getElementById('can5').getContext('2d');
c.font='32px Arial';c.fillText('6.CAN-5',10,40);
</script>
7.WEBGL-5
// WebGL canvas – omitted for brevity
8.JS-5
<h2 id="js5"></h2>
<script>document.getElementById('js5').innerText='8.JS-5';</script>
9.EVT-5
<h2 id="evt5">(click)</h2>
<script>document.getElementById('evt5').onclick=()=>{event.target.innerText='9.EVT-5'};</script>
10.COM-5
<h2><!--10.COM-5--></h2>
<script>...extract comment...</script>
11.ENC-5
// atob(<base64>) then inject
12.IFR-5
<iframe src="title5.html"></iframe>
13.PDF-5
<embed src="title5.pdf" type="application/pdf">
14.FNT-5
// custom icon font glyphs
15.FRM-5
<input value="15.FRM-5" disabled>
16.OBJ-5
<object data="title5-content.html"></object>
17.EMB-5
<embed src="title5-content.html">
18.SHD-5
<h2 is="shadow-title-5"></h2>
<script>
class ShadowTitle5 extends HTMLHeadingElement{
constructor(){super();const s=this.attachShadow({mode:'closed'});
const span=document.createElement('span');span.textContent='18.SHD-5';s.appendChild(span);}
}
customElements.define('shadow-title-5',ShadowTitle5,{extends:'h2'});
</script>
19.B64SVG-5
// <img src="data:image/svg+xml;base64,...">
20.XHR-5
<h2 id="xhr5"></h2>
<script>fetch('title5.txt').then(r=>r.text()).then(t=>xhr5.innerText=t);</script>
