.contour_menu { 
	animation-duration: 20s;
	animation-timing-function: linear;
	animation-iteration-count: infinite;
}

#contour_menu {
	animation-name: tourne;
	webkit-animation-name: tourne;
	moz-animation-name: tourne;
	o-animation-name: tourne;
}

@keyframes tourne {
	50% {
		-ms-transform: rotate(180deg); /* IE 9 */
    	-webkit-transform: rotate(180deg); /* Chrome, Safari, Opera */
    	transform: rotate(180deg);
	}
		100% {
		-ms-transform: rotate(360deg); /* IE 9 */
    	-webkit-transform: rotate(360deg); /* Chrome, Safari, Opera */
    	transform: rotate(360deg);
	}
}

@-moz-keyframes tourne {
	50% {
		-ms-transform: rotate(180deg); /* IE 9 */
    	-webkit-transform: rotate(180deg); /* Chrome, Safari, Opera */
    	transform: rotate(180deg);
	}
		100% {
		-ms-transform: rotate(360deg); /* IE 9 */
    	-webkit-transform: rotate(360deg); /* Chrome, Safari, Opera */
    	transform: rotate(360deg);
	}
}

@-webkit-keyframes tourne {
	50% {
		-ms-transform: rotate(180deg); /* IE 9 */
    	-webkit-transform: rotate(180deg); /* Chrome, Safari, Opera */
    	transform: rotate(180deg);
	}
		100% {
		-ms-transform: rotate(360deg); /* IE 9 */
    	-webkit-transform: rotate(360deg); /* Chrome, Safari, Opera */
    	transform: rotate(360deg);
	}
}

@-o-keyframes tourne {
	50% {
		-ms-transform: rotate(180deg); /* IE 9 */
    	-webkit-transform: rotate(180deg); /* Chrome, Safari, Opera */
    	transform: rotate(180deg);
	}
		100% {
		-ms-transform: rotate(360deg); /* IE 9 */
    	-webkit-transform: rotate(360deg); /* Chrome, Safari, Opera */
    	transform: rotate(360deg);
	}
}