content issues, added errors to template eex

apps/block_scout_web/assets/static/images/errors-tpl/tx-not-found.html

@@ -28,7 +28,7 @@
 							</div>
 							<div class="tx-nf-block">
 								<span class="tx-nf-number">4</span>
-								<p class="error-descr">If it still does not show up after 1 hour, please check with your sender/exchange/wallet/transaction provider for additional & information.</p>
+								<p class="error-descr">If it still does not show up after 1 hour, please check with your sender/exchange/wallet/transaction provider for additional information.</p>
 							</div>
 						</div>
 					</div>

apps/block_scout_web/lib/block_scout_web/templates/block_transaction/404.html.eex

@@ -1,3 +1,4 @@
+<%#
 <section class="container">
   <div class="row">
     <div class="col-12">
@@ -14,3 +15,17 @@
     </div>
   </div>
 </section>
+%>
+
+<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">
+    </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>

apps/block_scout_web/lib/block_scout_web/templates/transaction/not_found.html.eex

@@ -1,3 +1,4 @@
+<%#
 <section class="container">
   <section data-page="transaction-details" data-page-transaction-hash="<%= @transaction_hash %>">
     <div class="row">
@@ -45,3 +46,38 @@
     </div>
   </section>
 </section>
+%>
+
+<section class="container">
+  <div class="tx-nf">
+    <div class="tx-nf-illustr">
+      <img alt="Block Not Found" src="images/errors-img/eth-tx-not-found.png" srcset="images/eth-tx-not-found@2x.png 2x">
+    </div>
+    <div class="tx-nf-content">
+      <h1 class="card-title error-title">Sorry, We are unable to locate this transaction Hash</h1>
+      <div class="tx-nf-blocks">
+        <div class="tx-nf-blocks-row">
+          <div class="tx-nf-block">
+            <span class="tx-nf-number">1</span>
+            <p class="error-descr">If you have just submitted this transaction please wait for at least 30 seconds before refreshing this page.</p>
+          </div>
+          <div class="tx-nf-block">
+            <span class="tx-nf-number">2</span>
+            <p class="error-descr">It could still be in the TX Pool of a different node, waiting to be broadcasted.</p>
+          </div>
+        </div>
+        <div class="tx-nf-blocks-row">
+          <div class="tx-nf-block">
+            <span class="tx-nf-number">3</span>
+            <p class="error-descr">During times when the network is busy (i.e during ICOs) it can take a while for your transaction to propagate through the network and for us to index it.</p>
+          </div>
+          <div class="tx-nf-block">
+            <span class="tx-nf-number">4</span>
+            <p class="error-descr">If it still does not show up after 1 hour, please check with your sender/exchange/wallet/transaction provider for additional information.</p>
+          </div>
+        </div>
+      </div>
+      <a class="error-btn btn-line" href="/">Back Home</a>
+    </div>
+  </div>
+</section>