Preview:
<section class="destacada">
  <div class="contenido text-center">
    <h1 class="estilo"> Ayuda </h1>
    <img src="http://picsum.photos/100/100"/>
  </div>
</section> 

//css 
.destacada img{
  width: 50px;
  height: 50px;
}

 h1:hover ~ img{
  width: 200px; /*O lo que quieras*/
  height: 200px; /*O lo que quieras*/ 
}
downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter