diff --git a/src/components/APIConfig.js b/src/components/APIConfig.js
index 5746040..e31683c 100644
--- a/src/components/APIConfig.js
+++ b/src/components/APIConfig.js
@@ -58,7 +58,7 @@ function APIConfig2() {
       tabIndex="1"
       onKeyDown={handleContentOnKeyDown}
     >
-      <div className={s0.header}>RESTful API config for Clash</div>
+      <div className={s0.header}>Clash External Controller Config</div>
       <div className={s0.body}>
         <div className={s0.group}>
           <div className={s0.label}>Hostname and Port</div>
diff --git a/src/components/APIConfig.module.scss b/src/components/APIConfig.module.scss
index 0edf1b6..cba61e8 100644
--- a/src/components/APIConfig.module.scss
+++ b/src/components/APIConfig.module.scss
@@ -16,7 +16,7 @@
 .inputs {
   display: flex;
   align-items: center;
-  div:nth-child(2) {
+  input:nth-child(2) {
     width: 120px;
     margin-left: 10px;
   }
diff --git a/src/components/APIDiscovery.js b/src/components/APIDiscovery.js
index 0fdd126..c94719f 100644
--- a/src/components/APIDiscovery.js
+++ b/src/components/APIDiscovery.js
@@ -7,6 +7,8 @@ import APIConfig from 'c/APIConfig';
 import { closeModal } from 'd/modals';
 import { fetchConfigs } from 'd/configs';
 
+import s0 from './APIDiscovery.module.scss';
+
 const mapStateToProps = s => ({
   modals: s.modals
 });
@@ -26,6 +28,8 @@ export default function APIDiscovery() {
   return (
     <Modal
       isOpen={modals.apiConfig}
+      className={s0.content}
+      overlayClassName={s0.overlay}
       shouldCloseOnOverlayClick={false}
       shouldCloseOnEsc={false}
       onRequestClose={() => closeModal('apiConfig')}
diff --git a/src/components/APIDiscovery.module.scss b/src/components/APIDiscovery.module.scss
new file mode 100644
index 0000000..b1e970c
--- /dev/null
+++ b/src/components/APIDiscovery.module.scss
@@ -0,0 +1,7 @@
+.content {
+  background: none;
+}
+
+.overlay {
+  background: #222;
+}
diff --git a/src/components/Button.module.scss b/src/components/Button.module.scss
index 22214d5..37ea289 100644
--- a/src/components/Button.module.scss
+++ b/src/components/Button.module.scss
@@ -1,12 +1,15 @@
 .btn {
   -webkit-appearance: none;
   outline: none;
-  color: #ddd;
-  background: #606060;
+  color: #bebebe;
+  background: #232323;
   border: 1px solid #555;
   border-radius: 100px;
   padding: 6px 12px;
   &:hover {
-    background: darken(#555, 3%);
+    background: #387cec;
+    border: 1px solid #387cec;
+    color: #fff;
+    // background: darken(#555, 3%);
   }
 }
diff --git a/src/components/Modal.js b/src/components/Modal.js
index 19accdc..a9b1951 100644
--- a/src/components/Modal.js
+++ b/src/components/Modal.js
@@ -1,17 +1,26 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import Modal from 'react-modal';
+import cx from 'classnames';
 
 import s0 from './Modal.module.scss';
 
-function ModalAPIConfig({ isOpen, onRequestClose, children, ...otherProps }) {
+function ModalAPIConfig({
+  isOpen,
+  onRequestClose,
+  className,
+  overlayClassName,
+  children,
+  ...otherProps
+}) {
+  const contentCls = cx(className, s0.content);
+  const overlayCls = cx(overlayClassName, s0.overlay);
   return (
     <Modal
       isOpen={isOpen}
       onRequestClose={onRequestClose}
-      contentLabel="API-Config"
-      className={s0.content}
-      overlayClassName={s0.overlay}
+      className={contentCls}
+      overlayClassName={overlayCls}
       {...otherProps}
     >
       {children}
@@ -22,7 +31,9 @@ function ModalAPIConfig({ isOpen, onRequestClose, children, ...otherProps }) {
 ModalAPIConfig.propTypes = {
   isOpen: PropTypes.bool.isRequired,
   onRequestClose: PropTypes.func.isRequired,
-  children: PropTypes.node.isRequired
+  children: PropTypes.node.isRequired,
+  className: PropTypes.string,
+  overlayClassName: PropTypes.string
 };
 
 export default React.memo(ModalAPIConfig);
diff --git a/src/components/Root.scss b/src/components/Root.scss
index 243604f..7a0a5a0 100644
--- a/src/components/Root.scss
+++ b/src/components/Root.scss
@@ -61,8 +61,9 @@
 }
 
 body {
-  font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB',
-    'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica,
+    Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol,
+    'PingFang SC', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
   margin: 0;
   padding: 0;
 }
diff --git a/src/ducks/configs.js b/src/ducks/configs.js
index 11f80df..0edc8e0 100644
--- a/src/ducks/configs.js
+++ b/src/ducks/configs.js
@@ -3,16 +3,13 @@ import { openModal } from 'd/modals';
 import * as trafficAPI from 'a/traffic';
 
 const CompletedFetchConfigs = 'configs/CompletedFetchConfigs';
-const OptimisticUpdateConfigs = 'proxies/OptimisticUpdateConfigs';
+const OptimisticUpdateConfigs = 'configs/OptimisticUpdateConfigs';
+const MarkHaveFetchedConfig = 'configs/MarkHaveFetchedConfig';
 
 export const getConfigs = s => s.configs;
 
-// maybe we should put this flag in the redux store
-// but since is not related a UI element and only make sense to this chunk
-// of code, I'm going to leave it here
-let successfullyFetchedConfigsBefore = false;
 export function fetchConfigs() {
-  return async dispatch => {
+  return async (dispatch, getState) => {
     let res;
     try {
       res = await configsAPI.fetchConfigs();
@@ -41,13 +38,24 @@ export function fetchConfigs() {
       payload
     });
 
-    // side effect
-    if (successfullyFetchedConfigsBefore === false) {
-      successfullyFetchedConfigsBefore = true;
+    const configsCurr = getConfigs(getState());
+
+    if (configsCurr.haveFetchedConfig) {
       // normally user will land on the "traffic chart" page first
       // calling this here will let the data start streaming
       // the traffic chart should already subscribed to the streaming
       trafficAPI.fetchData();
+    } else {
+      dispatch(markHaveFetchedConfig());
+    }
+  };
+}
+
+function markHaveFetchedConfig() {
+  return {
+    type: MarkHaveFetchedConfig,
+    payload: {
+      haveFetchedConfig: true
     }
   };
 }
@@ -91,15 +99,15 @@ const initialState = {
   'redir-port': 0,
   'allow-lan': false,
   mode: 'Rule',
-  'log-level': 'info'
+  'log-level': 'info',
 
   /////
+  haveFetchedConfig: false
 };
 
 export default function reducer(state = initialState, { type, payload }) {
   switch (type) {
-    // case CompletedRequestDelayForProxy:
-    // case OptimisticSwitchProxy:
+    case MarkHaveFetchedConfig:
     case OptimisticUpdateConfigs:
     case CompletedFetchConfigs: {
       return { ...state, ...payload };