/*	 by Chris Coyier http://css-tricks.com */

* { margin: 0; padding: 0; }
body { font: 14px Georgia, serif; }
/* propriétés de base du menu */
nav {width: 960px;height: 100px;margin: 50px auto;	text-align: center;display: block;font-family: verdana,arial;}

/* attention à bien faire correspondre l'id de chaque item avec le code */
#item1 { background: #41D05F; }
#item2 { background: #E42B2B; }
#item3 { background: #ff8400; }
#item4 { background: #a800ff; }
#item5 { background: #49a7f3; }

.top-menu li {display: inline-block;text-align: center;margin: 30px 5px;position: relative;
-webkit-transition: all 0.3s ease;
-moz-transition: all 0.3s ease;
-o-transition: all 0.3s ease;
}
.top-menu li:hover {margin: 30px 20px; }
.top-menu li:active {margin: 30px 33px; }
.top-menu li a  {width: 100px;height: 100px;z-index: 9999;position: absolute;top: 35px;font-weight: bold;display: block;
text-decoration: none;
font-size: 20px;
color: #fff;
text-shadow: 0px 1px 1px rgba(0,0,0,0.4), 0px 4px 6px rgba(0,0,0,0.1), 0px 9px 11px rgba(0,0,0,0.1);
-webkit-transition: all 0.1s linear; 
-moz-transition: all 0.1s linear;
-o-transition: all 0.1s linear;
}
.top-menu li:active a {font-size: 26px;top: 30px;text-shadow: none;}
.top-menu li div.menu-item {width: 100px;height: 100px;display: block;
-webkit-transition: all 0.2s ease; 
-moz-transition: all 0.2s ease;
-o-transition: all 0.2s ease;
-webkit-border-top-left-radius: 100px; 
-webkit-border-bottom-right-radius: 100px; 
-moz-border-radius-topleft: 100px; 
-moz-border-radius-bottomright: 100px; 
border-top-left-radius: 100px; 
border-bottom-right-radius: 100px;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-o-transform: rotate(45deg);
}
.top-menu li:hover div.menu-item{ 
-webkit-border-top-left-radius: 80px; 
-webkit-border-bottom-right-radius: 80px; 
-moz-border-radius-topleft: 80px; 
-moz-border-radius-bottomright: 80px; 
border-top-left-radius: 80px; 
border-bottom-right-radius: 80px; 
-webkit-transform: rotate(225deg);
-moz-transform: rotate(225deg);
-o-transform: rotate(225deg);
}
.top-menu li:active div.menu-item{ 
	-webkit-border-top-left-radius: 50px; 
	-webkit-border-bottom-right-radius: 50px; 
	-moz-border-radius-topleft: 50px; 
	-moz-border-radius-bottomright: 50px; 
	border-top-left-radius: 50px; 
	border-bottom-right-radius: 50px; 

}