导入文件名显示优化

src/features/examwork/CourseManagement/PaperImportDialog.vue

@@ -2,7 +2,7 @@
   <el-dialog
     ref="dialog"
     title="导入试卷"
-    width="550px"
+    width="560px"
     :visible.sync="visible"
     @close="closeDialog"
   >

src/features/examwork/ExamStudentImport/ExamStudentImportDialog.vue

@@ -2,7 +2,7 @@
   <el-dialog
     ref="dialog"
     :title="'导入' + '考生'"
-    width="450px"
+    width="480px"
     :visible.sync="visible"
     @close="closeDialog"
   >

src/styles/global.css

@@ -108,3 +108,7 @@ body {
   color: #444444;
   background-color: #ffffff;
 }
+
+input[type=file] {
+  overflow: hidden;
+}