border-spacing issue with span element

How can i add space between this borders? Border-spacing is not working.

 {{#each spacing}}
<span class='space'>
  {{business}} ({{Count}})
</span>
{{/each}}

CSS

.space{
  border: 1px solid gray;
 border-spacing: 10px;
} 

>Solution :

You can use margin instead

.space {
 border: 1px solid gray;
 margin: 0 5px 0 0;
}