fix: style

(cherry picked from commit 29d493e2dafad9a0f34caa3917bf8765a6287fb2)

src/components/ContentDetailWrap/src/ContentDetailWrap.vue

@@ -26,7 +26,7 @@ onMounted(() => {
       <div
         :class="[
           `${prefixCls}-header`,
-          'lex b-b-1 h-50px items-center text-center bg-white pr-10px'
+          'flex b-b-1 h-50px items-center text-center bg-white pr-10px'
         ]"
       >
         <div :class="[`${prefixCls}-header__back`, 'flex pl-10px pr-10px ']">