diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c71708b16..0009b85e01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,7 +25,7 @@
 - [#2064](https://github.com/poanetwork/blockscout/pull/2064) - feat: add fields to tx apis, small cleanups
 
 ### Fixes
-- [#2082](https://github.com/poanetwork/blockscout/pull/2082) - dropdown styles, tooltip gap fix
+- [#2082](https://github.com/poanetwork/blockscout/pull/2082) - dropdown styles, tooltip gap fix, 404 page added
 - [#2077](https://github.com/poanetwork/blockscout/pull/2077) - ui issues
 - [#2072](https://github.com/poanetwork/blockscout/pull/2072) - Fixed checkmarks not showing correctly in tabs.
 - [#2066](https://github.com/poanetwork/blockscout/pull/2066) - fixed length of logs search input
diff --git a/apps/block_scout_web/assets/css/components/_dropdown.scss b/apps/block_scout_web/assets/css/components/_dropdown.scss
index 998f779ec5..f0a7e33661 100644
--- a/apps/block_scout_web/assets/css/components/_dropdown.scss
+++ b/apps/block_scout_web/assets/css/components/_dropdown.scss
@@ -5,6 +5,9 @@
   box-shadow: $box-shadow;
   padding: 0;
   width: 100%;
+  border-left: 1px solid #e2e5ec;
+  border-right: 1px solid #e2e5ec;
+  border-bottom: 1px solid #e2e5ec;
 
   &.right {
     left: auto;
diff --git a/apps/block_scout_web/assets/css/components/_filter.scss b/apps/block_scout_web/assets/css/components/_filter.scss
index 9beefde20b..0d99d48031 100644
--- a/apps/block_scout_web/assets/css/components/_filter.scss
+++ b/apps/block_scout_web/assets/css/components/_filter.scss
@@ -1,4 +1,4 @@
 .filter {
   min-width: 100%;
-  transform: translate3d(1px, 26px, 0px) !important;
+  transform: translate3d(0, 34px, 0px) !important;
 }
diff --git a/apps/block_scout_web/assets/css/components/_tooltip.scss b/apps/block_scout_web/assets/css/components/_tooltip.scss
index 4c845a7c1c..ecb334b84e 100644
--- a/apps/block_scout_web/assets/css/components/_tooltip.scss
+++ b/apps/block_scout_web/assets/css/components/_tooltip.scss
@@ -17,3 +17,8 @@ $tooltip-color: #fff !default;
     border-bottom-color: $tooltip-background-color;
   }
 }
+
+.bs-tooltip-top { top: -10px !important; }
+.bs-tooltip-bottom { top: 10px !important; }
+.bs-tooltip-left { left: -10px !important; }
+.bs-tooltip-right { left: 10px !important; }
diff --git a/apps/block_scout_web/assets/static/images/errors-img/etc-page-not-found.png b/apps/block_scout_web/assets/static/images/errors-img/etc-page-not-found.png
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diff --git a/apps/block_scout_web/assets/static/images/errors-img/xdai-page-not-found.png b/apps/block_scout_web/assets/static/images/errors-img/xdai-page-not-found.png
new file mode 100644
index 0000000000..af2e436dec
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diff --git a/apps/block_scout_web/assets/static/images/errors-img/xdai-page-not-found@2x.png b/apps/block_scout_web/assets/static/images/errors-img/xdai-page-not-found@2x.png
new file mode 100644
index 0000000000..7792882524
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diff --git a/apps/block_scout_web/lib/block_scout_web/templates/block_transaction/404.html.eex b/apps/block_scout_web/lib/block_scout_web/templates/block_transaction/404.html.eex
index ce9f49ad7a..4db03be12d 100644
--- a/apps/block_scout_web/lib/block_scout_web/templates/block_transaction/404.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/block_transaction/404.html.eex
@@ -1,7 +1,7 @@
 <section class="container">
   <div class="block-not-found">
     <div class="block-not-found-img">
-      <img alt="Block Not Found" src="/images/errors-img/eth-block-not-found.png" srcset="/images/eth-block-not-found@2x.png 2x">
+      <img alt="Block Not Found" src="/images/errors-img/eth-block-not-found.png" srcset="/images/errors-img/eth-block-not-found@2x.png 2x">
     </div>
     <div class="block-not-found-content">
       <h1 class="card-title error-title"><%= gettext("Block Details") %></h1>
diff --git a/apps/block_scout_web/lib/block_scout_web/templates/page_not_found/index.html.eex b/apps/block_scout_web/lib/block_scout_web/templates/page_not_found/index.html.eex
new file mode 100644
index 0000000000..6850c2deb2
--- /dev/null
+++ b/apps/block_scout_web/lib/block_scout_web/templates/page_not_found/index.html.eex
@@ -0,0 +1,12 @@
+<section class="container">
+  <div class="block-not-found">
+    <div class="block-not-found-img">
+      <img alt="Page Not Found" src="/images/errors-img/poa-page-not-found.png" srcset="/images/errors-img/poa-page-not-found@2x.png 2x">
+    </div>
+    <div class="block-not-found-content">
+      <h1 class="card-title error-title">Lorem Ipsum Dolor</h1>
+      <p class="error-descr">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua</p>
+      <a class="error-btn btn-line" href="/">Back Home</a>
+    </div>
+  </div>
+</section>
\ No newline at end of file