这一版本优化了很多

node_modules/wot-design-uni/components/wd-form-item/index.scss

@@ -0,0 +1,18 @@
+@import '../common/abstracts/variable';
+@import '../common/abstracts/mixin';
+
+.wot-theme-dark {
+  @include b(form-item) {
+  }
+}
+
+
+@include b(form-item) {
+  @include e(error-message){
+    color: $-form-item-error-message-color;
+    font-size: $-form-item-error-message-font-size;
+    line-height: $-form-item-error-message-line-height;
+    text-align: left;
+    vertical-align: middle;
+  }
+}