diff --git a/src/pages/20181112o4/src/components/app.css b/src/pages/20181112o4/src/components/app.css
index e61c893..f5aac7b 100644
--- a/src/pages/20181112o4/src/components/app.css
+++ b/src/pages/20181112o4/src/components/app.css
@@ -1,6 +1,7 @@
 .app {
   width: 100%;
   height: 100%;
+  min-width: 1640px;
   font-size: 12px;
   color: #333;
   display: flex;
diff --git a/src/pages/20181112o4/src/components/app.js b/src/pages/20181112o4/src/components/app.js
index 90523b6..3c4b531 100644
--- a/src/pages/20181112o4/src/components/app.js
+++ b/src/pages/20181112o4/src/components/app.js
@@ -291,6 +291,7 @@ class App extends Component {
                      <button className="btn" onClick={this.handleClickBeginBtn}>开始抢票</button>
                   </div>
                   <button className="btn" onClick={this.handleClickRandomBtn}>随机开始抢票</button>
+                  <a href={"https://dengtongyu.com/archives/346.html"} target={"_blank"} title={"解题思路"}>解题思路</a>
                </div>
                <div className="record" ref={(element) => this.element = element}>{this.renderRecord(this.state.record)}</div>
             </div>
diff --git a/src/pages/20181112o4/src/index.html b/src/pages/20181112o4/src/index.html
index f650d57..db21588 100644
--- a/src/pages/20181112o4/src/index.html
+++ b/src/pages/20181112o4/src/index.html
@@ -5,7 +5,7 @@
 <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 <meta name="theme-color" content="#000000">
-<title>Examples</title>
+<title>随机选座实例</title>
 <meta name="description" content="">
 <meta name="keywords" content="">
 <link href="" rel="stylesheet">