diff --git a/templates/echart/base.html b/templates/echart/base.html
index 44156b2..b96d8e8 100644
--- a/templates/echart/base.html
+++ b/templates/echart/base.html
@@ -1,7 +1,7 @@
 <html><head><title>smartchart:{{title}}</title><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta http-equiv="X-UA-Compatible" content="IE=edge">{% block head %}{% endblock %}{{contentrefresh|safe}}<style type="text/css">
 .table th, .table td {text-align: center;}
 .table {font-size:10px;}
-.devspan {position:fixed;z-index:99999;}
+.devspan {position:absolute;z-index:99999;}
 .devspan:hover a, .devhead:hover select, .devhead:hover a {display: initial;}
 .devspan a, .devhead select, .devhead a, .hidden {display: none}
 .devhead {background:white;position:fixed;z-index:99998;}
