HTML5 SVG Circle
by Huy Tuấn
HTML
<h2 align="center">HTML5 SVG Ellipse</h2>
<svg style="left:55%" id="svgelem" height="200" xmlns="http://www.w3.org/2000/svg">
<ellipse cx="100" cy="50" rx="100" ry="50" fill="green" />
</svg>
================================
<h2 align="center">HTML5 SVG Circle</h2>
<svg style=" left: 60%;" id="svgelem" height="200" xmlns="http://www.w3.org/2000/svg">
<circle id="redcircle" cx="50" cy="50" r="50" fill="green" />
</svg>
================================
<h2 align="center">HTML5 SVG Polygon</h2>
<svg id="svgelem" height="200" xmlns="http://www.w3.org/2000/svg">
<polygon points="20,10 300,20, 170,50" fill="green" />
</svg>
================================
<h2 align="center">HTML5 SVG Polyline</h2>
<svg id="svgelem" height="200" xmlns="http://www.w3.org/2000/svg" style="left:60%">
<polyline points="0,0 0,20 20,20 20,40 40,40 40,60" fill="green" />
</svg>
=================================
<h2 align="center">HTML5 SVG Gradient Ellipse</h2>
<svg id="svgelem" height="200" xmlns="http://www.w3.org/2000/svg" style="left:55%">
<defs>
<radialGradient id="gradient" cx="50%" cy="50%" r="50%" fx="50%" fy="50%">
<stop offset="0%" style="stop-color:rgb(200,200,200); stop-opacity:0" />
<stop offset="100%" style="stop-color:rgb(0,0,255); stop-opacity:1" />
</radialGradient>
</defs>
<ellipse cx="100" cy="50" rx="100" ry="50" style="fill:url(#gradient)" /> ===============================
<svg id="svgelem" height="200" xmlns="http://www.w3.org/2000/svg">
<defs>
<radialGradient id="gradient" cx="50%" cy="50%" r="50%" fx="50%" fy="50%">
<stop offset="0%" style="stop-color:rgb(200,200,200); stop-opacity:0" />
<stop offset="100%" style="stop-color:rgb(0,0,255); stop-opacity:1" />
</radialGradient>
</defs>
<ellipse cx="100" cy="50" rx="100" ry="50" style="fill:url(#gradient)" />
</svg>
CSS
#svgelem {
position: relative;
left: 50%;
-webkit-transform: translateX(-50%);
-ms-transform: translateX(-50%);
transform: translateX(-50%);
}