Voici le code
<div id="entête">
<div id="drapeau">
<img src="images/drapeau anglais.png" alt="" width="46" height="90" usemap="#Map2" />
<map name="Map2" id="Map2">
<area shape="circle" coords="18,18,17" href="#" alt="" />
</map>
</div>
<img src="images/entete.png" alt="entete" width="1000" height="150" usemap="#Map" longdesc="images/entete.png" />
<map name="Map" id="Map">
<area shape="poly" coords="25,125" href="#" alt="" />
<area shape="poly" coords="25,126,446,126,442,22,89,20,76,20,75,78,24,77,23,124,25,128" href="a propos.html" alt="" />
<area shape="poly" coords="713,37,743,20,764,18,788,20,801,26,810,34,817,41,820,52,827,56,840,58,867,61,906,67,922,73,924,85,920,93,909,98,883,101,855,102,842,103,837,110,834,119,832,129,819,135,805,137,794,136,783,127,774,122,756,122,739,124,724,120,717,104,713,82" href="index.html" alt="" />
</map>
</div>
et chaque div est entouré par un cadre bleu