🏗️ First time sync the css & js files from hexo theme NexT

assets/css/_common/outline/header/github-banner.scss

@@ -0,0 +1,59 @@
+@if hexo-config('github_banner.enable') {
+  @keyframes octocat-wave {
+    0%, 100% {
+      transform: rotate(0);
+    }
+
+    20%, 60% {
+      transform: rotate(-25deg);
+    }
+
+    40%, 80% {
+      transform: rotate(10deg);
+    }
+  }
+
+  .github-corner {
+    :hover .octo-arm {
+      animation: octocat-wave 560ms ease-in-out;
+    }
+
+    svg {
+      color: white;
+      fill: var(--theme-color);
+      position: absolute;
+      right: 0;
+      top: 0;
+      z-index: $zindex-0;
+    }
+
+    @include tablet-mobile() {
+      @if hexo-config('local_search.enable') or hexo-config('algolia_search.enable') {
+        display: none;
+      }
+
+      svg {
+        @if ($scheme == 'Pisces') or ($scheme == 'Gemini') {
+          color: var(--theme-color);
+          fill: white;
+        }
+      }
+
+      .github-corner:hover .octo-arm {
+        animation: none;
+      }
+
+      .github-corner .octo-arm {
+        animation: octocat-wave 560ms ease-in-out;
+      }
+    }
+
+    @if $scheme == 'Mist' {
+      @include mobile() {
+        svg {
+          top: inherit;
+        }
+      }
+    }
+  }
+}