CSS属性显示一个面板或一个部门与另一个部门重叠 [英] CSS property to show one panel or a division overlapping another division

问题描述

我有一个分区，其中有一个图像。这可以作为通知图像。

当我点击此图片时，会出现一个面板，显示不同的通知。



但问题我我面临的是，分区内的面板，不能覆盖在屏幕上的其他元素上。它就像是facebook通知中心，点击好友请求按钮，面板显示下来，它与聊天面板重叠和墙壁。



有人可以帮我这个。!!



谢谢！

I have a division in which there is an image. This serves as a notification image.
When i Click this image,a panel appears which shows the different notifications.

But the problem i am facing is that the panel which is inside a division, cannot be overlaped over other elements present on the screen.It is something like a facebook notification center, where on clicking the friend request button, a panel appears down and it overlaps the chat panel and the wall.

Can somebody please help me with this.!!

Thanks!

推荐答案

将第二个分区css属性设置为

set the second division css property to

.mydiv
{
position:absolute;
}

然后更改保证金属性。

then change the margin property .

主题通常称为CSS定位。以下页面涵盖了您需要的一切。 （不要偷懒，阅读整页）。



http://www.w3schools.com/css/css_positioning.asp [ ^ ]

The subject is often called "CSS positioning". The following page covers everything you need. (Don't be lazy, read the whole page).

http://www.w3schools.com/css/css_positioning.asp[^]

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