how could I set the border-bottom length of a header to a little bit longer than the text?
With this code it takes all the page length:

```
<div style="position:relative;">
    <h3 style="text-align:center; border-bottom:solid;">This is a test</h3>       
</div>

```

I've tried this code too:

```
<div style="position:relative;">    
        <h3 style="text-align:center;"><span style="border-bottom:solid;"> This is a test</span></h3>        
</div>

```

But with the last code it takes exactly the length of the text, how could I set the border-bottom length a little bit longer than that?