diff --git a/components/Header.vue b/components/Header.vue
index b501b76..0966431 100644
--- a/components/Header.vue
+++ b/components/Header.vue
@@ -254,7 +254,7 @@ export default class Header extends Vue {
   border-style: solid;
   border-right: 50px solid transparent;
   border-left: 50px solid transparent;
-  border-bottom: 50px solid #ffeed4;
+  border-bottom: 50px solid var(--bg-color);
   border-top: 0;
   transform: rotate(45deg);
 }
diff --git a/components/works/WorksCarouselThumb.vue b/components/works/WorksCarouselThumb.vue
index ad82abd..2b3d78f 100644
--- a/components/works/WorksCarouselThumb.vue
+++ b/components/works/WorksCarouselThumb.vue
@@ -91,10 +91,6 @@ import {
   Ref
 } from 'nuxt-property-decorator'
 
-import { Swiper } from 'swiper'
-import 'swiper/swiper-bundle.min.css'
-import 'swiper/swiper-bundle.min.js'
-
 import ItemImageView from '@/components/works/carouselItem/ImageView.vue'
 
 import { Asset } from '@/types'
diff --git a/layouts/default.vue b/layouts/default.vue
index 646077a..b8d9bdd 100644
--- a/layouts/default.vue
+++ b/layouts/default.vue
@@ -73,15 +73,13 @@ export default class Default extends Vue {
   }
 
   initTheme() {
-    if (this.getNowLogin) {
-      const winter = ['1', '12']
-      if (winter.includes(this.nowMonth)) {
-        this.themeClass = 'theme-winter'
-      } else {
-        this.themeClass = 'theme-base'
-      }
-      this.useCustomTheme = this.themeClass !== 'theme-base'
+    const winter = ['1', '12']
+    if (winter.includes(this.nowMonth)) {
+      this.themeClass = 'theme-winter'
+    } else {
+      this.themeClass = 'theme-base'
     }
+    this.useCustomTheme = this.themeClass !== 'theme-base'
   }
 
   async particlesInit(engine: Engine): Promise<void> {