.tickercontainer { /* the outer div with the black border */
width: 500px;
height: 27px;
margin: 0;
padding: 0;
overflow: hidden;
}
.tickercontainer .mask { /* that serves as a mask. so you get a sort of padding both left and right */
position: relative;
top: 8px;
height: 18px;
/*width: 718px;*/
overflow: hidden;
}
ul.newsticker { /* that's your list */
position: relative;
font-size:12;
/*left: 750px;*/
font: bold 10px Verdana;
list-style-type: none;
margin: 0;
padding: 0;
}
ul.newsticker li {
float: left; /* important: display inline gives incorrect results when you check for elem's width */
margin: 0;
padding-right: 15px;
/*background: #fff;*/
}