CODIGO CSS
* { margin: 0px;
padding: 0px; outline: 0;
}
html, body { width: 100%;}
body { background: #FFF;
font-family: Verdana, Arial, Helvetica, sans-serif;
}
#menu { text-align: center;
font-size: 0.7em;
width: 820px;
margin: 20px auto;
}
#menu ul { list-style-type: none;}
#menu ul li.nivel1 { float: left;
width: 162px;
margin-right: 2px;
}
#menu ul li a {display: block;
text-decoration: none;
color: #fff;
background-color: #399;
border: solid 1px #fff;
padding: 8px;
position: relative;
}
#menu ul li:hover {position: relative;
}
#menu ul li a:hover, #menu ul li:hover a.nivel1 {background-color: #6CC;
color: #000;
position: relative;
}
#menu ul li a.nivel1 {display: block!important;display: none;
position: relative;
}
#menu ul li ul {display: none;
}
#menu ul li a:hover ul, #menu ul li:hover ul {display: block;
position: absolute;left: 0px;
}
#menu ul li ul li a {width: 160px;
padding: 6px 0px 8px 0px;
border-top-color: #000;
}
#menu ul li ul li a:hover {border-top-color: #000;
position: relative;
}
table.falsa {border-collapse:collapse;
border:0px;
float: left;
position: relative;
}CODIGO HTML
<div id="menu">
<ul>
<li class="nivel1">[url="#"]Link 1[/url]
<ul>
[*][url="#"]Link 1.1[/url]
[*][url="#"]Link 1.2[/url]
[/list]
<li class="nivel1">[url="#"]Link 2[/url]
<ul>
[*][url="#"]Link 2.1[/url]
[*][url="#"]Link 2.2[/url]
[*][url="#"]Link 2.3[/url]
[*][url="#"]Link 2.4[/url]
[*][url="#"]Link 2.5[/url]
[/list]
<li class="nivel1">[url="#"]Link 3[/url]
<ul>
[*][url="#"]Link 3.1[/url]
[*][url="#"]Link 3.2[/url]
[*][url="#"]Link 3.3[/url]
[/list]
[/list]
</div>Que conste que el codigo no es mio, esta simplemente destripado de una web.