样式可不输入，编码限制字符。

src/views/modules/section/sectioncategory-add-or-update.vue

@@ -5,7 +5,7 @@
           <el-input v-model="dataForm.name" placeholder="分类名称"></el-input>
       </el-form-item>
           <el-form-item label="分类编码" prop="code">
-          <el-input v-model="dataForm.code" placeholder="分类编码"></el-input>
+          <el-input v-model="dataForm.code" onkeyup="value=value.replace(/[^a-zA-Z]/g,'')" placeholder="分类编码"></el-input>
       </el-form-item>
         <el-form-item label="所属版块"
                       prop="sectionCode">
@@ -70,9 +70,6 @@ export default {
         sectionCode: [
           { required: true, message: this.$t('validate.required'), trigger: 'blur' }
         ],
-        frontStyle: [
-          { required: true, message: this.$t('validate.required'), trigger: 'blur' }
-        ],
         sort: [
           { required: true, message: this.$t('validate.required'), trigger: 'blur' }
         ]