diff --git a/neo3-gui/neo3-gui/ClientApp/src/components/Contract/contract.js b/neo3-gui/neo3-gui/ClientApp/src/components/Contract/contract.js
index 292104f..ffd0e30 100644
--- a/neo3-gui/neo3-gui/ClientApp/src/components/Contract/contract.js
+++ b/neo3-gui/neo3-gui/ClientApp/src/components/Contract/contract.js
@@ -64,7 +64,7 @@ class Contract extends React.Component {
                       }
                       title={<Link className="asset-link w450 ellipsis" to={"/contract/detail:" + item.hash} title={t("show detail")}>{item.name}</Link>}
                     />
-                    <Typography>{item.hash} <Copy msg={item.hash} /></Typography>
+                    <Typography className='code'>{item.hash} <Copy msg={item.hash} /></Typography>
                   </List.Item>
                 )}
               />
diff --git a/neo3-gui/neo3-gui/ClientApp/src/components/Transaction/transaction.js b/neo3-gui/neo3-gui/ClientApp/src/components/Transaction/transaction.js
index 2936822..f6de18e 100644
--- a/neo3-gui/neo3-gui/ClientApp/src/components/Transaction/transaction.js
+++ b/neo3-gui/neo3-gui/ClientApp/src/components/Transaction/transaction.js
@@ -247,7 +247,7 @@ class Transaction extends React.Component {
               /> */}
               <div className="trans-detail">
                 <p>
-                  <Link className="w500 ellipsis hash"
+                  <Link className="w500 ellipsis hash code"
                     to={{
                       pathname: local + item.txId,
                       state: { from: path }
diff --git a/neo3-gui/neo3-gui/ClientApp/src/index.css b/neo3-gui/neo3-gui/ClientApp/src/index.css
index cffe85a..3c08d0a 100644
--- a/neo3-gui/neo3-gui/ClientApp/src/index.css
+++ b/neo3-gui/neo3-gui/ClientApp/src/index.css
@@ -7,9 +7,10 @@ body {
   -moz-osx-font-smoothing: grayscale;
 }
 
+.code,
+.code:hover,
 code {
-  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
-    monospace;
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
 }
 
 
diff --git a/neo3-gui/neo3-gui/ClientApp/src/static/css/trans.css b/neo3-gui/neo3-gui/ClientApp/src/static/css/trans.css
index 298c753..811d896 100644
--- a/neo3-gui/neo3-gui/ClientApp/src/static/css/trans.css
+++ b/neo3-gui/neo3-gui/ClientApp/src/static/css/trans.css
@@ -126,7 +126,7 @@
 .ant-list-item:hover .trans-detail .hash,
 .ant-list-item:hover .trans-detail a {
   font-weight: 700;
-  letter-spacing: 0.44px;
+  /* letter-spacing: 0.44px; */
 }
 .trans-detail {
   display: inline-block;