Merge branch 'fix/gallery-css' into 'develop'

Fix gallery style - move hide button to top right

Closes #335

See merge request pleroma/pleroma-fe!579

src/components/attachment/attachment.vue

@@ -160,6 +160,7 @@
 
   .hider {
     position: absolute;
+    right: 0;
     white-space: nowrap;
     margin: 10px;
     padding: 5px;