fixing gallery height

vue-theme/src/components/gallery.vue

 
 <style lang="postcss">
 .gallery
-    position: absolute
+    position: fixed
     top: 0
     left: 0
-    width: 100vw
-    height: 100%
+    width: 100%
+    height: 100vw
     background-color: blue
     opacity: 75%
     z-index: 1001
+    > *
+        opacity: 100%
+        position: relative
+        z-index: 1011
     ul
         list-style: none
         li