.titre{ background-color : body { background-color: purple; color: green; font-family: Verdana; } .tritre{ background:linear-gradient(45deg, #6E18CC #3318CC); padding: 20px padding-bottom: 20px border-radius: 20px text-align: center; front-size: 20px transition: background 0.5s; { .titre:hover { background: linear-gradient (45deg, #9F98D6 #98D6AA); .menu{ backgroung-color #FFFFFF; border-radius: 20px text-align: center; front-size:35px } @front-face { front-family : arial; src: url(front/Arial.TTf);