我们用最简单的两句话概括:
display:none 隐藏元素后,不占位;
visibility:hidden 隐藏元素后,占位;
display:none示例如下:
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>display元素</h1>
    <p>这是段落一</p>
    <p style="display: none;">这是段落二</p>
    <p>这是段落三</p>
</body>
</html> 

visibility:hidden示例如下:
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>visibility元素</h1>
    <p>这是段落一</p>
    <p style="visibility: hidden;">这是段落二</p>
    <p>这是段落三</p>
</body>
</html> 











