body {
background-color: ;
background-image: url(https://hal-centralesupelec.archives-ouvertes.fr/public/header_HAL_CS_2_80.jpg);
background-repeat: repeat-x;
/*background-position: left top; */
background-position: 0px 48px;
margin-left: 10%;
margin-right: 10%;
}

a {
color: #2d79a0;
}

p {
font-size: 1.3em;
}

li {
list-style-type: none;
font-size: 1.1em;
}

h1, h2, h3 {
font-family: Helvetica, arial, sans-serif;
color: #807f79;
font-size: 2em;
}

h4, h5, h6 {
color: #807f79;
}

#container {
background-color: ;
padding: 10px 10px 50px;
}


div, table,label, input, button, select, textarea {
font-family: Arial, Helvetica, sans-serif;
font-size: 1em;
color: #222222;
}

.titre-collection-CS {
    font-family: Arial, Helvetica, sans-serif;
color: #fff;
    font-size: 30pt;
font-weight:bold;
}

.logo{
height:306px;
padding-top:20px;
margin-left:-10px;
}

.widget-header{
background-color:#2d79a0;
color:#eeede8;
text-align: center;
}

/***** navigation *****/
.nav-tabs > li > a {
margin-right: 3px;
line-height: 1.428571429;
border: 1px solid transparent;
border-radius: 0 0 0 0;
font-weight:bold;
background-color: #2d79a0;
color:#FFF;
}

.nav-tabs > li > a:hover {
background-color: #FFF;
color:#222;
border: 1px solid #dddddd;
}

.nav-tabs > li.active > a,
.nav-tabs > li.active > a:hover,
.nav-tabs > li.active > a:focus {
color: #000;
cursor: default;
background-color: #FFF;
border: 1px solid #dddddd;
border-bottom-color: transparent;
}