.tickercontainer { /* the outer div with the black border */
border: solid 1px #b8c9d9;
background: #3ba0ff; 
width: 548px; 
height: 20px; 
margin: 5px 0 0 0; 
padding: 0 0 9px 0;
overflow: hidden; 
}
.tickercontainer .mask { /* that serves as a mask. so you get a sort of padding both left and right */
position: relative;
left: 2px;
top: 6px;
width: 545px;
overflow: hidden;
}
ul.newsticker { /* that's your list */
position: relative;
white-space: nowrap;
left: 540px;
font: bold 14px Verdana;
color:#fff;
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: 0;
background: none;
}
ul.newsticker a {
white-space: nowrap;
padding: 0;
color: #ff0000;
font: bold 10px Verdana;
margin: 0 50px 0 0;
} 
ul.newsticker span {
margin: 0 10px 0 0;
}