CSS下拉菜单对齐

Question

I have created a dropdown menu using CSS based, however when you hover over the parent list item, the unordered list displays anchored to the left of the parent item. I would like it to be central to them, but I cant figure out how.

http://jsfiddle.net/jspring/LtVaq/

Html:

<ul class="ulRight">
<li><a href="#">Settings</a>
    <ul>
        <li><a href="#">This Is</a></li>
        <li><a href="#">Sub Menu</a></li>
        <li><a href="#">One</a></li>
    </ul>
</li>
<li><a href="#">Your Account</a>
    <ul>
        <li><a href="#">Sub Menu</a></li>
        <li><a href="#">Two</a></li>
        <li><a href="#">Now!</a></li>
    </ul>
</li>

.ulRight {
    /*To float UL List to right*/
    list-style:none outside none !important;
    position:absolute;
    right:10px;
    top:0px;
    display:inline-table;
    z-index:1000;
}
.ulRight ul:after {
    content:"";
    clear:both;
    display:block;
}
.ulRight > li {
    display:inline;
    color:#BBBBBB;
    width:auto;
}
.ulRight li > ul {
    vertical-align:middle;
    z-index:1001;
    display:none;
    position:relative;
    margin:auto;
    top:40px;
    width:inherit;
}
.ulRight li:hover > ul {
    display:block;
}
.ulRight > li {
    margin:0 5px 0 5px;
}
.ulRight > li {
    float:left;
}
.ulRight > li:hover {
    background:#FFF;
    border:1px solid #CCCCCC;
}
.ulRight a {
    text-decoration:none;
    font-weight:normal;
    display:block;
    padding:10px;
}
.ulRight li:hover a {
    font-weight:bold;
    color:#80B5E9;
    text-align:center;
}
.ulRight li > ul {
    background:#FFF;
    border-radius:0px;
    padding:0px;
    position:absolute;
    box-shadow:0px 0px 9px rgba(0, 0, 0, 0.15);
    border:1px solid #CCCCCC;
}
.ulRight li > ul > li {
    list-style:none;
    float:none;
    border-top:1px solid #CCCCCC;
    border-bottom:1px solid #CCCCCC;
    position:relative;
}
.ulRight li > ul a {
}
.ulRight li > ul a:hover {
    color:#FFF;
    background:#303030;
}

Any help would be much appreciated!

Answer 1

change to a relative position

.ulRight li > ul{
position:relative;
top:0;
}

Answer 2

The main problem i see is that your parent list's width is not consistent.

.ulRight li >ul{
position:realative; // this position makes the child position realative to your parent list which is left justified....
}

The quickest and easiest is the apply fix width. This way your parent and child list are all the same width.

.ulRight > li {
display:inline;
color:#BBBBBB;
width:auto;  // Change this to 110px or what ever you see fit
}

if you don't like this solution you will need to use javascript to set up parameters...(to my knowledge anyway)

hope this helps