set o[acity on image html code example

Example: html image map

the map defines what url will be assigned to that shape over the the image

<style>
img {
    display: block;
    margin: 0 auto;
    width: 260px;
    height: 248px;
}
  </style>
  <map name="infographic">
    <area shape="rect" coords="184,6,253,27"
          href="https://mozilla.org"
          target="_blank" alt="Mozilla" />
    <area shape="circle" coords="130,136,60"
          href="https://developer.mozilla.org/"
          target="_blank" alt="MDN" />
    <area shape="poly" coords="130,6,253,96,223,106,130,39"
          href="https://developer.mozilla.org/docs/Web/Guide/Graphics"
          target="_blank" alt="Graphics" />
    <area shape="poly" coords="253,96,207,241,189,217,223,103"
          href="https://developer.mozilla.org/docs/Web/HTML"
          target="_blank" alt="HTML" />
    <area shape="poly" coords="207,241,54,241,72,217,189,217"
          href="https://developer.mozilla.org/docs/Web/JavaScript"
          target="_blank" alt="JavaScript" />
    <area shape="poly" coords="54,241,6,97,36,107,72,217"
          href="https://developer.mozilla.org/docs/Web/API"
          target="_blank" alt="Web APIs" />
    <area shape="poly" coords="6,97,130,6,130,39,36,107"
          href="https://developer.mozilla.org/docs/Web/CSS"
          target="_blank" alt="CSS" />
</map>
<img usemap="#infographic" src="https://interactive-examples.mdn.mozilla.net/media/examples/mdn-info.png" alt="MDN infographic" />