I have a table in which a specific `<td>` will have dynamic text. It should scroll when multiple lines are present. So I used the `overflow:auto` property. But even when the content is not overflowed the scroll bar is visible. It is visible all of the time.

My PHP code is:

```
printf( '<table class="scroll-table">' );
printf( '<tr><td>..</td>');
printf( '<td ><div style="float: left"><strong>Comment:</strong></div> <div class="scroll">%s</div></td>',$info['comment'] );

```

CSS properties:

```
.scroll-table{
    table-layout: fixed;
}
.scroll-table td{
    width:33%;
    padding-right:4px;
}
.scroll{
    white-space: normal;
    overflow: auto;
    height: 1em;
    line-height: 1em;
    width: 20em;

```

What is wrong in my code?