Firefox ignoring CSS font-weight property

Question

Not sure if I'm using the correct process for displaying a font that has 3 weights - `normal`, `bold` and `lighter` - but, it seems to work in most browsers expect Firefox.

Firefox seems to be using `font-weight: lighter`; as default?

How the fonts appear in Chrome is what I'm after.

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo.eot');
    src: url('../fonts/lovelo.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo.woff') format('woff'),
         url('../fonts/lovelo.ttf') format('truetype'),
         url('../fonts/lovelo.svg#loveloblack') format('svg');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo-bold.eot');
    src: url('../fonts/lovelo-bold.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo-bold.woff') format('woff'),
         url('../fonts/lovelo-bold.ttf') format('truetype'),
         url('../fonts/lovelo-bold.svg#loveloblack') format('svg');
    font-weight: bold;
    font-style: normal;
}

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo-light.eot');
    src: url('../fonts/lovelo-light.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo-light.woff') format('woff'),
         url('../fonts/lovelo-light.ttf') format('truetype'),
         url('../fonts/lovelo-light.svg#loveloblack') format('svg');
    font-weight: lighter;
    font-style: normal;
}

working example

Answer 1

You could try using the actual numbers for the font-weight. 400 is the same as font-weight: normal. 700 is the same as font-weight: bold. 100, 200, or 300 are the additional values. You would have to choose one that is the effect you want.

Answer 2

I suspect that the other @font-face styles are simply being over written by the last one.

Basically font-weight: lighter; is being used because it appears last in a list of three rules with equal specificity.

I would trim it down to one @font-face and place the font weights on your text elements like this:

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo-light.eot');
    src: url('../fonts/lovelo-light.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo-light.woff') format('woff'),
         url('../fonts/lovelo-light.ttf') format('truetype'),
         url('../fonts/lovelo-light.svg#loveloblack') format('svg');
    font-style: normal;
}

p{
    font-weight: lighter;
}

Answer 3

Thanks @user1640021

I experimented a little further with expressing a numerical value for font-weight and it seems to of done the trick in Firefox!

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo.eot');
    src: url('../fonts/lovelo.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo.woff') format('woff'),
         url('../fonts/lovelo.ttf') format('truetype'),
         url('../fonts/lovelo.svg#lovelo') format('svg');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo-bold.eot');
    src: url('../fonts/lovelo-bold.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo-bold.woff') format('woff'),
         url('../fonts/lovelo-bold.ttf') format('truetype'),
         url('../fonts/lovelo-bold.svg#lovelo-bold') format('svg');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'lovelo';
    src: url('../fonts/lovelo-light.eot');
    src: url('../fonts/lovelo-light.eot?#iefix') format('embedded-opentype'),
         url('../fonts/lovelo-light.woff') format('woff'),
         url('../fonts/lovelo-light.ttf') format('truetype'),
         url('../fonts/lovelo-light.svg#lovelo-light') format('svg');
    font-weight: 200;
    font-style: normal;
}

working example