body { background-color:#CCCCCC; } #sectioncourbe { display: none; } #sectionexport { display: none; } #export { width: 25em; height: 20em; display:none; } #courbe_warnings { display: none; } #courbe_erreurs { display: none; } #import_donnees, #pref_graphique{ display: none; } .bouton { text-decoration: underline; } .bouton:hover { cursor:pointer; }