Revert "fix: Coverpage when content > viewport height (#1744)"

This reverts commit 4349bad.

Author: Koooooo-7

.gitignore

@@ -1,11 +1,11 @@
 .DS_Store
 .idea
 *.log
-/_playwright-report
-/_playwright-results
-/lib
-/node_modules
-/themes
+_playwright-report
+_playwright-results
+lib
+node_modules
+themes
 
 # exceptions
 !.gitkeep

src/themes/basic/_coverpage.styl

@@ -1,11 +1,10 @@
 section.cover
-  position relative
   align-items center
   background-position center center
   background-repeat no-repeat
   background-size cover
-  min-height 100vh
-  width 100%
+  height 100vh
+  width 100vw
   display none
 
   &.show
@@ -16,12 +15,12 @@ section.cover
     opacity 0.8
     position absolute
     top 0
-    bottom 0
+    height 100%
     width 100%
 
   .cover-main
     flex 1
-    margin 0 16px
+    margin -20px 16px 0
     text-align center
     position: relative