Trước đây khi bạn muốn tạo một menu có hiệu ứng đặc biệt thì một là bạn tạo menu bằng flash, hai là tạo bằng jquery, tuy nhiên cùng với sự phát triển của internet thì bạn không cần phải dùng những thứ đó nữa, mà tất cả chỉ bằng CSS3.
Đầu tiên chúng ta tạo file HTML trước
<ul id="nav">
<li><a href="http://sharecode.vn/">Home</a></li>
<li><a href="#">Menu 1</a>
<ul>
<li><a href="#">Submenu 1</a></li>
<li><a href="#">Submenu 2</a></li>
<li><a href="#">Submenu 3</a></li>
<li><a href="#">Submenu 4</a></li>
<li><a href="#">Submenu 5</a></li>
</ul>
</li>
<li><a href="#">Menu 2</a>
<ul>
<li><a href="#">Submenu 2-1</a></li>
<li><a href="#">Submenu 2-2</a></li>
<li><a href="#">Submenu 2-3</a></li>
<li><a href="#">Submenu 2-4</a></li>
<li><a href="#">Submenu 2-5</a></li>
<li><a href="#">Submenu 2-6</a></li>
<li><a href="#">Submenu 2-7</a></li>
<li><a href="#">Submenu 2-8</a></li>
</ul>
</li>
<li><a href="#">Menu 3</a>
<ul>
<li><a href="#">Submenu 3-1</a></li>
<li><a href="#">Submenu 3-2</a></li>
<li><a href="#">Submenu 3-3</a></li>
<li><a href="#">Submenu 3-4</a></li>
<li><a href="#">Submenu 3-5</a></li>
</ul>
</li>
<li><a href="#">Menu 4</a></li>
<li><a href="#">Menu 5</a></li>
<li><a href="#">Menu 6</a></li>
<li><a href="http://sharecode.vn/css/">Back</a></li>
</ul>
Và phần quan trọng nhất là đây, đoạn CSS giúp bạn làm nên những điều thần kỳ
#nav,#nav ul {
list-style: none outside none;
margin: 0;
padding: 0;
}
#nav {
font-family: "Lucida Sans Unicode",Verdana,Arial,sans-serif;
font-size: 13px;
height: 36px;
list-style: none outside none;
margin: 40px auto;
text-shadow: 0 -1px 3px #202020;
width: 980px;
/* border radius */
-moz-border-radius:4px;
-webkit-border-radius:4px;
border-radius:4px;
/* box shadow */
-moz-box-shadow: 0px 3px 3px #cecece;
-webkit-box-shadow: 0px 3px 3px #cecece;
box-shadow: 0 3px 4px #8b8b8b;
/* gradient */
background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #787878), color-stop(0.5, #5E5E5E), color-stop(0.51, #707070), color-stop(1, #838383));
background-image: -moz-linear-gradient(center bottom, #787878 0%, #5E5E5E 50%, #707070 51%, #838383 100%);
background-color:#5f5f5f;
}
#nav ul {
left: -9999px;
position: absolute;
top: -9999px;
z-index: 2;
}
#nav li {
border-bottom: 1px solid #575757;
border-left: 1px solid #929292;
border-right: 1px solid #5d5d5d;
border-top: 1px solid #797979;
display: block;
float: left;
height: 34px;
position: relative;
width: 105px;
}
#nav li:first-child {
border-left: 0 none;
margin-left: 5px;
}
#nav li a {
color: #FFFFFF;
display: block;
line-height: 34px;
outline: medium none;
text-align: center;
text-decoration: none;
/* gradient */
background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #787878), color-stop(0.5, #5E5E5E), color-stop(0.51, #707070), color-stop(1, #838383));
background-image: -moz-linear-gradient(center bottom, #787878 0%, #5E5E5E 50%, #707070 51%, #838383 100%);
background-color:#5f5f5f;
}
/* keyframes #animation1 */
@-webkit-keyframes animation1 {
0% {
-webkit-transform: scale(1);
}
30% {
-webkit-transform: scale(1.3);
}
100% {
-webkit-transform: scale(1);
}
}
@-moz-keyframes animation1 {
0% {
-moz-transform: scale(1);
}
30% {
-moz-transform: scale(1.3);
}
100% {
-moz-transform: scale(1);
}
}
#nav li > a:hover {
/* css3 animation */
-moz-animation-name: animation1;
-moz-animation-duration: 0.7s;
-moz-animation-timing-function: linear;
-moz-animation-iteration-count: infinite;
-moz-animation-direction: normal;
-moz-animation-delay: 0;
-moz-animation-play-state: running;
-moz-animation-fill-mode: forwards;
-webkit-animation-name: animation1;
-webkit-animation-duration: 0.7s;
-webkit-animation-timing-function: linear;
-webkit-animation-iteration-count: infinite;
-webkit-animation-direction: normal;
-webkit-animation-delay: 0;
-webkit-animation-play-state: running;
-webkit-animation-fill-mode: forwards;
}
#nav li:hover > a {
z-index: 4;
}
#nav li:hover ul.subs {
left: 0;
top: 34px;
width: 150px;
}
#nav ul li {
background: none repeat scroll 0 0 #838383;
box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.5);
opacity: 0;
width: 100%;
/*-webkit-transition:all 0.3s ease-in-out;
-moz-transition:all 0.3s ease-in-out;
-o-transition:all 0.3s ease-in-out;
-ms-transition:all 0.3s ease-in-out;
transition:all 0.3s ease-in-out;*/
}
/* keyframes #animation2 */
@-webkit-keyframes animation2 {
0% {
margin-left:185px;
}
100% {
margin-left:0px;
opacity:1;
}
}
@-moz-keyframes animation2 {
0% {
margin-left:185px;
}
100% {
margin-left:0px;
opacity:1;
}
}
#nav li:hover ul li {
/* css3 animation */
-moz-animation-name: animation2;
-moz-animation-duration: 0.3s;
-moz-animation-timing-function: linear;
-moz-animation-iteration-count: 1;
-moz-animation-direction: normal;
-moz-animation-delay: 0;
-moz-animation-play-state: running;
-moz-animation-fill-mode: forwards;
-webkit-animation-name: animation2;
-webkit-animation-duration: 0.3s;
-webkit-animation-timing-function: linear;
-webkit-animation-iteration-count: 1;
-webkit-animation-direction: normal;
-webkit-animation-delay: 0;
-webkit-animation-play-state: running;
-webkit-animation-fill-mode: forwards;
/*-webkit-transition:all 0.3s ease-in-out;
-moz-transition:all 0.3s ease-in-out;
-o-transition:all 0.3s ease-in-out;
-ms-transition:all 0.3s ease-in-out;
transition:all 0.3s ease-in-out;*/
}
/* animation delays */
#nav li:hover ul li:nth-child(1) {
-moz-animation-delay: 0;
-webkit-animation-delay: 0;
}
#nav li:hover ul li:nth-child(2) {
-moz-animation-delay: 0.05s;
-webkit-animation-delay: 0.05s;
}
#nav li:hover ul li:nth-child(3) {
-moz-animation-delay: 0.1s;
-webkit-animation-delay: 0.1s;
}
#nav li:hover ul li:nth-child(4) {
-moz-animation-delay: 0.15s;
-webkit-animation-delay: 0.15s;
}
#nav li:hover ul li:nth-child(5) {
-moz-animation-delay: 0.2s;
-webkit-animation-delay: 0.2s;
}
#nav li:hover ul li:nth-child(6) {
-moz-animation-delay: 0.25s;
-webkit-animation-delay: 0.25s;
}
#nav li:hover ul li:nth-child(7) {
-moz-animation-delay: 0.3s;
-webkit-animation-delay: 0.3s;
}
#nav li:hover ul li:nth-child(8) {
-moz-animation-delay: 0.35s;
-webkit-animation-delay: 0.35s;
}
Các bạn đã tin những gì mình nói chưa, rất tuyệt phải không nào?