diff --git a/src/BalanceShower.js b/src/BalanceShower.js
index 86ebf52..97f7c97 100644
--- a/src/BalanceShower.js
+++ b/src/BalanceShower.js
@@ -63,7 +63,7 @@ export class BalanceShower extends PureComponent {
         else if(this.state.loading_status==='error')
             return (<div className="box box-tip balance-value"><a onClick={()=>{alert(this.state.error)}}>无法查询余额</a></div>);
         else if(this.state.loading_status==='done')
-            return (<div className="box box-tip balance-value">校园卡 ￥{this.state.balance}</div>);
+            return (<div className="box box-tip balance-value">校园卡 ￥{this.state.balance.toFixed(2)}</div>);
         else
             return null;
     }
diff --git a/src/Flows.css b/src/Flows.css
index d8af56a..5965922 100644
--- a/src/Flows.css
+++ b/src/Flows.css
@@ -15,7 +15,7 @@
 .root-dark-mode .box {
     background-color: var(--box-bgcolor-dark);
     color: var(--foreground-dark);
-    box-shadow: 0 0 5px rgba(255,255,255,.15);
+    box-shadow: 0 0 3px rgba(255,255,255,.2);
 }
 
 .root-dark-mode .sidebar .box {
@@ -145,7 +145,7 @@
 }
 
 .box-header, .box-footer {
-    font-size: small;
+    font-size: .8em;
 }
 
 .flow-item-row p.img {
@@ -161,7 +161,7 @@
 }
 
 .root-dark-mode .flow-item-row p.img img {
-    filter: brightness(.8);
+    filter: brightness(.85);
 }
 
 .box-header-badge {
diff --git a/src/Sidebar.css b/src/Sidebar.css
index 576f834..a255479 100644
--- a/src/Sidebar.css
+++ b/src/Sidebar.css
@@ -24,7 +24,7 @@
     opacity: .5;
 }
 .root-dark-mode .sidebar-on .sidebar-shadow:active {
-    opacity: .3;
+    opacity: .65;
 }
 
 .sidebar {
diff --git a/src/UserAction.js b/src/UserAction.js
index 285204f..29dc2cc 100644
--- a/src/UserAction.js
+++ b/src/UserAction.js
@@ -109,7 +109,7 @@ export class LoginForm extends Component {
                 })
                 .catch((e)=>{
                     console.error(e);
-                    alert('发送失败。'+e);
+                    alert('发送失败\n'+e);
                     this.setState({
                         loading_status: 'done',
                     });
@@ -139,20 +139,19 @@ export class LoginForm extends Component {
                 .then(get_json)
                 .then((json)=>{
                     if(json.code!==0) {
-                        if(json.msg) alert(json.msg);
+                        if(json.msg) throw new Error(json.msg);
                         throw new Error(JSON.stringify(json));
                     }
 
-                    let freshman_welcome=json.uid.indexOf('19')===0 && (+new Date())<1567958400000; // 2019-09-09 0:00 GMT+8
                     set_token(json.user_token);
-                    alert(`成功以 ${json.name} 的身份登录`+(freshman_welcome ? '\n欢迎来到北京大学！' : ''));
+                    alert(`成功以 ${json.name} 的身份登录`);
                     this.setState({
                         loading_status: 'done',
                     });
                 })
                 .catch((e)=>{
                     console.error(e);
-                    alert('登录失败');
+                    alert('登录失败\n'+e);
                     this.setState({
                         loading_status: 'done',
                     });
diff --git a/src/index.js b/src/index.js
index 80546cc..e2a3d40 100644
--- a/src/index.js
+++ b/src/index.js
@@ -2,10 +2,10 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import './index.css';
 import App from './App';
-import {elevate} from './infrastructure/elevator';
+//import {elevate} from './infrastructure/elevator';
 import registerServiceWorker from './registerServiceWorker';
 
-elevate();
+//elevate();
 
 ReactDOM.render(<App />, document.getElementById('root'));
 registerServiceWorker();