diff --git a/assets/webui/index.html b/assets/webui/index.html
index f1d1a1b..d184bec 100644
--- a/assets/webui/index.html
+++ b/assets/webui/index.html
@@ -50,11 +50,7 @@
 				<div class="tool-group">
 					<button id="pageLayoutButton" class="button" type="button" data-short="单" disabled>单页</button>
 					<button id="continuousButton" class="button" type="button" data-short="连" data-pressed="false" disabled>连续</button>
-				</div>
-				<div class="tool-group">
 					<button id="annotationButton" class="button" type="button" data-short="注" data-pressed="true">注解</button>
-				</div>
-				<div class="tool-group">
 					<button id="renderVectorButton" class="button" type="button" data-short="矢" data-pressed="true" disabled>矢量</button>
 					<button id="renderRasterButton" class="button" type="button" data-short="位" data-pressed="false" disabled>位图</button>
 				</div>