chore: increase the max width of main container

resources/css/common.css

@@ -3,7 +3,7 @@
   --ls-tag-text-hover-opacity: 1;
   --ls-page-text-size: 1em;
   --ls-page-title-size: 36px;
-  --ls-main-content-max-width: 810px;
+  --ls-main-content-max-width: 1200px;
   --ls-main-content-max-width-wide: 100%;
   --ls-font-family: Inter;
   --ls-scrollbar-width: 6px;