/*HEADER DE FOND*/
.ban1 { background-image: url('https://2img.net/image.noelshack.com/fichiers/2017/08/1487787433-headergtp1topaz.png');background-position:top;background-repeat:no-repeat; border-bottom: 5px solid #fff; }
.ban2 { background-image: url('https://2img.net/image.noelshack.com/fichiers/2017/08/1487787431-headergtp2topaz.png');background-position:top;background-repeat:no-repeat; border-bottom: 5px solid #fff; }
.ban3 { background-image: url('https://2img.net/image.noelshack.com/fichiers/2017/08/1487787434-headergtp3topaz.png');background-position:top;background-repeat:no-repeat; border-bottom: 5px solid #fff;}
.ban4 { background-image: url('https://2img.net/image.noelshack.com/fichiers/2017/08/1487787494-headergtp4topaz.png');background-position:top;background-repeat:no-repeat;border-bottom: 5px solid #fff; }