chore(css):use daisyui themes and remove some code?

src/assets/base.css

@@ -1,5 +1,7 @@
 @import "tailwindcss";
-@plugin "daisyui";
+@plugin "daisyui" {
+   themes: cmyk --default,business --prefersdark;
+ }
 
 /* color palette from <https://github.com/vuejs/theme> */
 :root {

src/assets/main.css

@@ -20,9 +20,6 @@ a,
 }
 
 @media (min-width: 1024px) {
-  body {
-  }
-
   #app {
     padding: 0 2rem;
   }