Yin-Yang circle created with a DIV tag and CSS properties (without image file).
<style type="text/css">
#yinyang {
 width: 100px; height: 50px;
 background: #fff;
 border-color: #000;
 border-style: solid;
 border-width: 2px 2px 50px 2px;
 border-radius: 100%;
 position: relative;
#yinyang:before {
 content: "";
 position: absolute;
 top: 50%;
 left: 0;
 background: #fff;
 border: 18px solid #000;
 border-radius: 100%;
 width: 14px;
 height: 14px;
#yinyang:after {
 content: "";
 position: absolute;
 top: 50%;
 left: 50%;
 background: #000;
 border: 18px solid #fff;
 width: 14px;
 height: 14px;

<div id="yinyang"></div>

Daily Test with Code Example

Which tag is used to add definition lists into a <dl> element?
<dt> <dd> <li>
  <dd> - Hyper Text Markup Language</dd>
  <dd> - Language for web pages</dd>
Which CSS property can hide an element on page, letting an empty space in its place?
display position visibility
#id {
  visibility: hidden;
Click on the event which is triggered when the mouse clicks on an object.
onclick onmouseover onfocus
document.getElementById("id").onclick = function(){
Indicate the PHP variable that contains the contents of both $_GET, $_POST, and $_COOKIE arrays.
if(isset($_REQUEST["id"])) {
  echo $_REQUEST["id"];
Yin-Yang with CSS

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