diff --git a/tools/esp8266/html/style.css b/tools/esp8266/html/style.css
index f15f1cf1..8abd13bb 100644
--- a/tools/esp8266/html/style.css
+++ b/tools/esp8266/html/style.css
@@ -177,7 +177,7 @@ div.ch {
     min-height: 350px;
     background-color: #006ec0;
     display: inline-block;
-    margin: 0 10px 15px 10px;
+    margin: 0 0px 20px 10px;
     overflow: auto;
     padding-bottom: 20px;
 }