优化el-lialog，title

src/styles/index.scss

@@ -89,3 +89,10 @@ div:focus {
 .app-container {
   padding: 20px;
 }
+
+.el-dialog__title {
+  line-height: 24px;
+  font-size: 16px;
+  color: #303133;
+  padding-left: 10px;
+}