`fitWidth` for `video-miniature`, fluid grid (#2830)

* Fluid abstract video list

* normalize timestamp display on miniatures

* use grid for abstract-video-list

- refactor scss function var to pvar to avoid overriding css variables
- move fluid-grid margins to adapt-margin-content-width mixin for maintainability
- fix video-miniature-name margin-top on small screen

* move sceenratio function in a mixin

* display no miniature avatar in channel videos view

1 files changed, 2 insertions, 2 deletions

diff --git a/client/src/app/videos/+video-watch/video-watch-playlist.component.scss b/client/src/app/videos/+video-watch/video-watch-playlist.component.scss
index db36dcd8b..0b0a2a899 100644
--- a/client/src/app/videos/+video-watch/video-watch-playlist.component.scss
+++ b/client/src/app/videos/+video-watch/video-watch-playlist.component.scss
@@ -7,7 +7,7 @@
   min-width: 200px;
   max-width: 470px;
   height: 66vh;
-  background-color: var(--mainBackgroundColor);
+  background-color: pvar(--mainBackgroundColor);
   overflow-y: auto;
   border-bottom: 1px solid $separator-border-color;
 
@@ -22,7 +22,7 @@
     }
 
     .playlist-by-index {
-      color: var(--greyForegroundColor);
+      color: pvar(--greyForegroundColor);
       display: flex;
 
       .playlist-by {