build: move .browserslistrc to top level (#9396)

packages/vant-cli/docs/config.md

@@ -321,6 +321,6 @@ module.exports = {
 
 ```json
 {
-  "browserslist": ["Android >= 4.0", "iOS >= 8"]
+  "browserslist": ["Chrome >= 51", "iOS >= 10"]
 }
 ```

packages/vant/src/field/README.md

@@ -367,7 +367,7 @@ The component provides the following CSS variables, which can be used to customi
 | --van-field-clear-icon-color | _var(--van-gray-5)_ | - |
 | --van-field-right-icon-color | _var(--van-gray-6)_ | - |
 | --van-field-error-message-color | _var(--van-danger-color)_ | - |
-| --van-field-error-message-text-color | _12px_ | - |
+| --van-field-error-message-font-size | _12px_ | - |
 | --van-field-text-area-min-height | _60px_ | - |
 | --van-field-word-limit-color | _var(--van-gray-7)_ | - |
 | --van-field-word-limit-font-size | _var(--van-font-size-sm)_ | - |

packages/vant/src/field/README.zh-CN.md

@@ -386,7 +386,7 @@ fieldRef.value?.focus();
 | --van-field-clear-icon-color          | _var(--van-gray-5)_       | -    |
 | --van-field-right-icon-color          | _var(--van-gray-6)_       | -    |
 | --van-field-error-message-color       | _var(--van-danger-color)_ | -    |
-| --van-field-error-message-text-color  | _12px_                    | -    |
+| --van-field-error-message-font-size   | _12px_                    | -    |
 | --van-field-text-area-min-height      | _60px_                    | -    |
 | --van-field-word-limit-color          | _var(--van-gray-7)_       | -    |
 | --van-field-word-limit-font-size      | _var(--van-font-size-sm)_ | -    |

packages/vant/src/field/index.less

@@ -14,7 +14,7 @@
   --van-field-clear-icon-color: @field-clear-icon-color;
   --van-field-right-icon-color: @field-right-icon-color;
   --van-field-error-message-color: @field-error-message-color;
-  --van-field-error-message-text-color: @field-error-message-text-color;
+  --van-field-error-message-font-size: @field-error-message-font-size;
   --van-field-text-area-min-height: @field-text-area-min-height;
   --van-field-word-limit-color: @field-word-limit-color;
   --van-field-word-limit-font-size: @field-word-limit-font-size;
@@ -175,7 +175,7 @@
 
   &__error-message {
     color: var(--van-field-error-message-color);
-    font-size: var(--van-field-error-message-text-color);
+    font-size: var(--van-field-error-message-font-size);
     text-align: left;
 
     &--center {

packages/vant/src/field/var.less

@@ -12,7 +12,7 @@
 @field-clear-icon-color: var(--van-gray-5);
 @field-right-icon-color: var(--van-gray-6);
 @field-error-message-color: var(--van-danger-color);
-@field-error-message-text-color: 12px;
+@field-error-message-font-size: 12px;
 @field-text-area-min-height: 60px;
 @field-word-limit-color: var(--van-gray-7);
 @field-word-limit-font-size: var(--van-font-size-sm);