@charset "utf-8";
/* CSS Document */
/* common styling */
.menu {font-family: arial, sans-serif; width:100px; position:relative; margin:0; font-size:12px; margin:0px; font-weight:bold}
.menu ul li a, .menu ul li a:visited {display:block; text-decoration:none; color:#fff; width:214px; text-align:left; border:1px solid #fff; border-width:1px 1px 0px 0px; background:#019fe7; line-height:19px; font-size:13px; font-weight:bold; text-indent:10px}
/*menu chinh khi chua dua chuot len*/
.menu ul {padding:0; margin:0;list-style-type: none; }
.menu ul li {float:left; margin-right:1px; position:relative;}
.menu ul li ul {display: none;}

/* specific to non IE browsers */
.menu ul li:hover a {color:#085ca3; background:#e3edf9; }
/*menu chinh khi dua chuot len*/
.menu ul li:hover ul {display:block; position:absolute; top:0; left:221px; width:100px; }
<!-- top:0; left:186px la vi tri cua menu con cap 1 -->
.menu ul li:hover ul li a.hide {background:#9a3096; color:#000;}
.menu ul li:hover ul li:hover a.hide {width:100px;}
.menu ul li:hover ul li ul {display: none; }

.menu ul li:hover ul li a {display:block; background:#019fe7; color:#fff; width:214px; text-decoration:none }
/*menu con cap 1 khi chua dua chuot len*/
.menu ul li:hover ul li a:hover {background:#e3edf9; color:#085ca3; }
/*menu con cap 1 khi dua chuot len*/
.menu ul li:hover ul li:hover ul {display:block; left:100px; top:0; color:#000;}
<!-- top:0; left:186px la vi tri cua menu con cap 2 -->
.menu ul li:hover ul li:hover ul li a {display:block; width:100px; background:#9a3096; color:#fff; }
/*menu con cap 2 khi chua dua chuot len*/
.menu ul li:hover ul li:hover ul li a:hover {background-color:#9a3096; color:#fff;}
/*menu con cap 2 khi dua chuot len*/