<img src="./images/logo.png" alt="W3C cafe" width="249" height="107" /> <img src="http://www.coopernet.fr/images/logo.png" alt="W3C cafe" width="249" height="107" />
Balise picture
<picture>
<source srcset="../images/bob-small.jpg" media="(max-width: 780px)">
<source srcset=../images/bob-big.jpg" media="(min-width: 780px)">
<img src="m../images/bob.jpg" alt="">
</picture>