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Twenty Seventeen: Improve display of video header and header image in modern browsers 

The theme uses a hack to help the video header and header image fill the available space. This centers around `max-width: 1000%;`. It causes visual issues (zooming of the header video or image) for all users though.

This fixes that with CSS Features Queries. The hack remains for browsers that don't support Feature Queries  and `object-fit`. Browsers that do support both get a better experience with a more reliable styling of the video and image header container.

Props laurelfulford, peterwilsoncc.

Fixes #39035 for the 4.7 branch.


git-svn-id: https://develop.svn.wordpress.org/branches/4.7@39485 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Helen Hou-Sandi 2016-12-04 19:23:20 +00:00
parent e27a7eb76e
commit 8397b5023f
1 changed files with 18 additions and 0 deletions
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18
src/wp-content/themes/twentyseventeen/style.css
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@ -1690,6 +1690,24 @@ body:not(.title-tagline-hidden) .site-branding-text {
transform: translateX(-50%) translateY(-50%);
}
/* For browsers that support 'object-fit' */
@supports ( object-fit: cover ) {
.has-header-image .custom-header-media img,
.has-header-video .custom-header-media video,
.has-header-video .custom-header-media iframe {
height: 100%;
left: 0;
-o-object-fit: cover;
object-fit: cover;
top: 0;
-ms-transform: none;
-moz-transform: none;
-webkit-transform: none;
transform: none;
width: 100%;
}
}
.wp-custom-header .wp-custom-header-video-button { /* Specificity prevents .color-dark button overrides */
background-color: rgba(34, 34, 34, 0.5);
border: 1px solid rgba(255, 255, 255, 0.6);