How to wrap two spans into one line with CSS

Here is the working example:

<div style="float:left;">
    <span style="display:inline; color: red;">First Span</span>
    <span style="display:inline; color: blue;">Second Span</span>
</div>

The float will mess things up. Usually with a float to work you need a width with it as well. It can't float them against each other because it doesn't know how much space each span will occupy in relation to the div. Spans are inherently inline elements unless you define them otherwise, so they should just display that way without the float.

It's the float left that is causing it to be on separate lines. Maybe try a   (non breaking space) in between the spans.

<div style="float:left;">
    <span style="display:contents; color: red;">First Span</span>
    <span style="display:contents; color: blue;">Second Span</span>
</div>

'display:contents' Makes the container disappear, making the child elements children of the element the next level up in the DOM which I believe is the right answer.

Another way which works on ie too is this:

<div style="float:left; display:flex;">
    <span style="color: red;">First Span</span>
    <span style="color: blue;">Second Span</span>
</div>