*{ font-family: "Arial"; } .centrage { text-align: center; font-size: 20px; } .global { text-align: center; } br { line-height: 50px; } body { color: black; background-color: white; background-image: url("../ressources/image/background.jpg"); background-repeat: no-repeat; background-size: 104%; margin: 0; } #container { margin: 5% 15% 2% 15%; background-color: white; border: 2px solid black; } h1 { text-align: center; font-size: 250%; } #form { text-align: center; } .error{ color: red; text-align: center; }