.navbar-inner {
/* min-height: 40px; */
/* padding-left: 20px; */
/* padding-right: 20px; */
/* background-color: #fafafa; */
background-image: -moz-linear-gradient(top,#ffffff,#f2f2f2);
/* background-image: -webkit-gradient(linear,0 0,0 100%,from(#ffffff),to(#f2f2f2)); */
/* background-image: -webkit-linear-gradient(top,#ffffff,#f2f2f2); */
background-image: -o-linear-gradient(top,#ffffff,#f2f2f2);
/* background-image: linear-gradient(to bottom,#ffffff,#f2f2f2); */
/* background-repeat: repeat-x; */
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff', endColorstr='#fff2f2f2', GradientType=0);
/* border: 1px solid #d4d4d4; */
/* -webkit-border-radius: 4px; */
-moz-border-radius: 4px;
/* border-radius: 4px; */
/* -webkit-box-shadow: 0 1px 4px rgba(0,0,0,0.065); */
-moz-box-shadow: 0 1px 4px rgba(0,0,0,0.065);
/* box-shadow: 0 1px 4px rgba(0,0,0,0.065); */
}
Vous pouvez donc aussi modifier/supprimer ce code via le fichier "administrator/templates/isis/css/templates.css" .