diff --git a/source/css/layout/_partial/side-tools-container.styl b/source/css/layout/_partial/side-tools-container.styl
index fcd97fa..582bec1 100644
--- a/source/css/layout/_partial/side-tools-container.styl
+++ b/source/css/layout/_partial/side-tools-container.styl
@@ -14,6 +14,7 @@ $tools-item-width = 30px;
     cursor: pointer;
     box-shadow: 1px 1px 3px var(--shadow-color);
     border-right: none;
+    border-radius: 1px;
 
     &:hover {
       transition();