fix: 调整代码面板宽度和字体大小

Author: CC11001100

src/App.css

@@ -15,7 +15,7 @@
 }
 
 .code-section {
-  width: 380px;
+  width: 420px;
   flex-shrink: 0;
   display: flex;
   flex-direction: column;

src/components/CodePanel/CodePanel.css

@@ -53,8 +53,8 @@
   flex: 1;
   overflow: auto;
   font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
-  font-size: 13px;
-  line-height: 1.6;
+  font-size: 12px;
+  line-height: 1.5;
 }
 
 .code-line {