body {
  /*background-image:linear-gradient(#6DA9DB, #3B6CA4);*/
  background-image:radial-gradient(#6DA9DB, #3B6CA4);
}
.fond {
  z-index: -2;
  background-position:top center;
  background-size: cover;
  background-repeat:no-repeat;
  background-repeat-x:no-repeat;
  background-repeat-y:no-repeat;
  background-attachment: fixed;
  position:fixed;
  width:100%;
  height:100%;
}
.fond_1 {
  background-image:url("../img/img_fond_1.jpg");
}
.fond_2 {
  background-image:url("../img/img_fond_2.jpg");
}
.fond_3 {
  background-image:url("../img/img_fond_3.jpg");
}
.fond_4 {
  background-image:url("../img/img_fond_4.jpg");
}
a {
  color:white;
  background-color: #6DA9DB;
  padding-right: 10px;
  padding-left: 10px;
  padding-bottom: 5px;
}
#titre {
  align: center;
  color:white;
  background-color: transparent;
  font-size: 1.5em;
  font-weight: bold;
  padding-top: 10px;
}
.opacity_0 {  /* Transparent */
  opacity: 0;
  -moz-opacity : 0 ;
  -khtml-opacity : 0 ;
  filter : alpha(opacity=0) ;
}
.opacity_10 {
  opacity: 0.1;
  -moz-opacity : 0.1 ;
  -khtml-opacity : 0.1 ;
  filter : alpha(opacity=10) ;
}
.opacity_20 {
  opacity: 0.2;
  -moz-opacity : 0.2 ;
  -khtml-opacity : 0.2 ;
  filter : alpha(opacity=20) ;
}
.opacity_30 {
  opacity: 0.3;
  -moz-opacity : 0.3 ;
  -khtml-opacity : 0.3 ;
  filter : alpha(opacity=30) ;
}
.opacity_40 {
  opacity: 0.4;
  -moz-opacity : 0.4 ;
  -khtml-opacity : 0.4 ;
  filter : alpha(opacity=40) ;
}
.opacity_50 {
  opacity: 0.5;
  -moz-opacity : 0.5 ;
  -khtml-opacity : 0.5 ;
  filter : alpha(opacity=50) ;
}
.opacity_60 {
  opacity: 0.6;
  -moz-opacity : 0.6 ;
  -khtml-opacity : 0.6 ;
  filter : alpha(opacity=60) ;
}
.opacity_70 {
  opacity: 0.7;
  -moz-opacity : 0.7 ;
  -khtml-opacity : 0.7 ;
  filter : alpha(opacity=70) ;
}
.opacity_80 {
  opacity: 0.8;
  -moz-opacity : 0.8 ;
  -khtml-opacity : 0.8 ;
  filter : alpha(opacity=80) ;
}
.opacity_90 {
  opacity: 0.9;
  -moz-opacity : 0.9 ;
  -khtml-opacity : 0.9 ;
  filter : alpha(opacity=90) ;
}
.opacity_100 {
  opacity: 1;
  -moz-opacity : 1 ;
  -khtml-opacity : 1 ;
  filter : alpha(opacity=100) ;
}
.div_ligne
{
  font-size:18px;
  /*font-family: Arial, Helvetica, sans-serif;*/
  margin-left : 20px;
  margin-bottom: 30px;
}
.scroll
{
  overflow:auto;
  text-align: justify;
  padding:3px 10px 3px 10px; /* haut, droit, bas, gauche */
  color:white;
  background-color:#6DA9DB;
}
.scroll_cadre
{
  background-color:#AFD0DF;
}
/* https://developer.mozilla.org/fr/docs/Web/CSS/::-webkit-scrollbar */
/* La barre entière */
.scroll::-webkit-scrollbar {
  width: 12px;
}
/* La barre de défillement */
.scroll::-webkit-scrollbar-track {
  -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
  border-radius: 10px;
  /*background-color: #FFFFFF;*/
}
/* Le curseur de défilement */
.scroll::-webkit-scrollbar-thumb {
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.5);
  /*background: #81F7F3;*/
}
.bord_arrondi
{
  width:890px;
  height:600px;
  border:0px solid #DF0101;
  background:#DDDDDD;
  -moz-border-radius: 275px;
  -webkit-border-radius: 275px;
  -o-border-radius: 275px;
  border-radius: 275px;
}