1 files changed, 25 insertions, 0 deletions
diff --git a/packages/gitbook-plugin-theme-default/less/Sidebar.less b/packages/gitbook-plugin-theme-default/less/Sidebar.less
index 1689b9f..a0bfeae 100644
--- a/packages/gitbook-plugin-theme-default/less/Sidebar.less
+++ b/packages/gitbook-plugin-theme-default/less/Sidebar.less
@@ -27,3 +27,28 @@
     border-right: 1px solid @sidebar-border-color;
     overflow-y: auto;
 }
+
+.GitBookTrademark {
+    text-align: center;
+    text-decoration: none;
+    opacity: 0.1;
+    margin-top: 80px;
+    margin-bottom: 40px;
+    color: #000;
+    display: block;
+
+    &:hover {
+        text-decoration: none;
+        opacity: 0.2;
+    }
+
+    span {
+        display: block;
+    }
+
+    img {
+        max-width: 64px;
+        filter: grayscale(100%);
+        margin-top: 10px;
+    }
+}