How to display “Classic” built-up fractions with an horizontal line in CSS / JavaScript?

Question

I have a fraction and I want to display it neatly and nicely.

For example

4/5

would be

4
-
5

I have looked at this and

Answer 1

This does not automatically convert '1/2' to a fraction form. But if you have more control over the templating, you can do the following. Since no one has suggested using a table yet, here goes:

HTML:

  

    
Top of Fraction
  
  

    
Bottom of Fraction
  

CSS:

table.fraction {
  display: inline-block;
  text-align: center;
  margin-left: 1em;
}

table.fraction td {
  line-height: 2em;
}

table.fraction td.top {
  border-bottom: 1px solid darkgray;
}

Result: