feat: add CSS Selectors and Xpath memo

src/tools/css-selectors-memo/css-selectors-memo.vue

@@ -0,0 +1,32 @@
+<script setup lang="ts">
+import { useThemeVars } from 'naive-ui';
+import Memo from './css-selectors-memo.md';
+
+const themeVars = useThemeVars();
+</script>
+
+<template>
+  <div>
+    <Memo style="overflow-x: auto;" />
+  </div>
+</template>
+
+<style lang="less" scoped>
+::v-deep(pre) {
+  margin: 0;
+  padding: 15px 22px;
+  background-color: v-bind('themeVars.cardColor');
+  border-radius: 4px;
+  overflow: auto;
+}
+::v-deep(table) {
+  border-collapse: collapse;
+}
+::v-deep(table), ::v-deep(td), ::v-deep(th) {
+  border: 1px solid v-bind('themeVars.textColor1');
+  padding: 5px;
+}
+::v-deep(a) {
+  color: v-bind('themeVars.textColor1');
+}
+</style>