span with percentage width

like in case of tables

TD WIDTH 25    TD WIDTH 75
 

this is what I want to achieve with DIV/SPAN. All I have:

  <span style="background-color: green; width: 25%; display: inline-block;">1</span>
   <span style="background-color: yellow; width: 75%; display: inline-block;">2</span><br />
   <span style="background-color: green; width: 25%; display: inline-block;">a</span>
   <span style="background-color: yellow; width: 75%; display: inline-block;">b</span><br />
 

but then puts span to new line. It works with fix (px) sizes.

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Answer:

use float

  <span style="background-color: green; width: 25%; float:left;">1</span>
  <span style="background-color: yellow; width: 75%; float:right;">2</span><br />
  <span style="background-color: green; width: 25%; float:left;">a</span>
  <span style="background-color: yellow; width: 75%; float:right;">b</span><br />