bug fix

src/features/examwork/StudentManagement/StudentManagement.vue

@@ -40,10 +40,10 @@
 
     <el-table :data="tableData">
       <el-table-column type="selection" width="42" />
-      <el-table-column width="100" label="ID">
+      <el-table-column label="ID">
         <span slot-scope="scope">{{ scope.row.id }}</span>
       </el-table-column>
-      <el-table-column width="100" label="姓名">
+      <el-table-column width="120" label="姓名">
         <span slot-scope="scope">{{ scope.row.name }}</span>
       </el-table-column>
       <el-table-column width="200" label="证件号">