<style>
div {
  font-family: Ahem;
  font-size: 20px;
  float: left;
}
</style>
<div style="word-spacing: -1px">X X X</div>
<div style="word-spacing: -10px">X X X</div>
<div style="word-spacing: 1px">X X X</div>
<div style="word-spacing: 10px">X X X</div>