<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob)</title> 
<style>
.importExcels{
            position: relative;
            left: 690px;
        }
</style>
</head>
<body>

 
<button class="importExcels">默认按钮</button>
   
</body>
</html>

下面两个组合就能向右移动 

 position: relative;
 left: 690px;

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css 样式向右移动