add config flag to control bigimg stretching about beautifulhugo

[liwenyip]

To solve your issue, open main.css and change cover; to contain; on lines 429-432 and 442-445 (8 instances total).

If you want grey-fill at the sides, insert the following line into .intro-header.big-img and .intro-header.big-img .big-img-transition:

background-color: lightgrey;

I'm not sure it's worth building a flag for this into the template, but let's let @halogenica decide.

[halogenica]

I'm glad it's working out for you @gnalck! As for changing the bigimg behavior, @liwenyip kindly provided a solution for you. Generally I think you should feel free to make these nuanced customizations in your own local version. However, I would also gladly accept a pull request if you do decide to make the customizations user-friendly. For example, if the default bigimg behavior stayed the same, but a "bigimgstyle" field was added to the config.toml that could define the behavior like "fill", "fit", "center", "span", etc, that could be a nice customization for other people.

If you'd like to see it in the theme (so you don't have to maintain your own customizations), please make a pull request and I'll be happy to review it and add it.

[liwenyip]

Maybe what is worth adding is a param in config.toml and/or front matter that lets you load a custom css file e.g. /static/css/custom.css.

Then @gnalck could avoid having to maintain his own customisations by putting this in a custom css file:

.intro-header.big-img, .intro-header.big-img  .big-img-transition {
  -webkit-background-size: contain !important;
  -moz-background-size: contain !important;
  background-size: contain !important;
  -o-background-size: contain !important;
  background-color: lightgrey;
}

I'll add this to my to do list :-)

[halogenica]

@gnalck you might be interested in the change @liwenyip just made! e214c15