#bloc {
 width: 582px;
 height: 618px;
 background: url(../images/formation.jpg);
 margin: 10px auto; padding :0;
 position: relative;
 }
 
 #bloc li {margin: 0; padding: 0; list-style: none; display: block; position: absolute;}
 
 #bloc a {display: block;}
 
 #bloc1 {left: 255px; top: 260px; width: 40px; height: 38px;}
 #bloc2 {left: 198px; top: 318px; width: 36px; height: 41px;}
 #bloc3 {left: 298px; top: 272px; width: 37px; height: 38px;}
 #bloc4 {left: 232px; top: 340px; width: 34px; height: 38px;}
 #bloc5 {left: 342px; top: 291px; width: 38px; height: 39px;}
 #bloc6 {left: 6px; top: 226px; width: 173px; height: 33px;}
 #bloc7 {left: 6px; top: 312px; width: 147px; height: 33px;}
 #bloc8 {left: 403px; top: 214px; width: 101px; height: 48px;}
 #bloc9 {left: 6px; top: 377px; width: 126px; height: 33px;}
 #bloc10 {left: 472px; top: 280px; width: 101px; height: 48px;} 
 #bloc11 {left: 489px; top: 352px; width: 92px; height: 44px;}
 #bloc12 {left: 278px; top: 364px; width: 34px; height: 35px;} 
 
 
 a:hover {border-style : outset}
  
 #bloc1 a {height: 38px;}
 #bloc2 a {height: 41px;}
 #bloc3 a {height: 38px;}
 #bloc4 a {height: 38px;}
 #bloc5 a {height: 39px;}
 #bloc6 a {height: 33px;}
 #bloc7 a {height: 33px;}
 #bloc8 a {height: 48px;}
 #bloc9 a {height: 33px;}
 #bloc10 a {height: 48px}
 #bloc11 a {height: 44px;}
 #bloc12 a {height: 35px}