css - 新手的烦恼，怎么给<hr>元素设置粗细

下面是HTML的问题部分： {代码...} 下面是CSS的部分： {代码...} 本来想在文字底下设置分隔线，就用 &lt;hr&gt; 元素，现在想对 &lt;hr&gt; 标签设置粗细...

From [HTMLdiscussion group] 2017-04-17 12:04:10 0  4  930

html5 - 为什么<audio>标签在每个浏览器中支持的音频文件的格式都不一样？

&lt;audio&gt;标签支持的音频文件格式竟然没有一种能在所有浏览器中通用的？   IE 9 Firefox 3.5 Opera 10.5 Chrome 3.0 Safari 3.0 Ogg Vor...

From [HTMLdiscussion group] 2017-04-17 11:12:41 0  6  930

web端读取IC卡信息

最近做一个项目，要在浏览器端读取IC卡信息，现在手里就有一个客户的即插即用IC卡读卡器，深圳明华的产品，现在没有头绪，不知道web端怎么调用，哪位大神可以给点建议

From [HTMLdiscussion group] 2016-11-16 14:38:16 0  2  930

javascript - The information received by WebSocket is binary. How to parse it?

I grabbed other people's ws information and got Blob type data. How should I parse it?

From [HTMLdiscussion group] 2017-05-16 13:44:39 0  1  929

css - 在绝对定位的情况下怎么让div居中呢？

{代码...}

From [HTMLdiscussion group] 2017-04-17 13:43:56 0  5  928

css - input输入框记录清除

各位大神，我的密码输入框，只要获取到焦点后就会把以前浏览器的密码输入记录显示出来。我设置autocomplete="off"也没有办法禁用，怎么解决这个问题啊？ &lt;input class...

From [HTMLdiscussion group] 2017-04-17 12:04:48 0  3  926

Where can I download the packaging software in the video?

Can't find it

From [HTMLdiscussion group] 2020-03-16 15:58:33 0  0  925

javascript - When the mobile phone clicks on the input, will the button be pushed up? Please solve it! ! !

On the H5 page, when the button uses position: fixed;bottom: 0;, when you click the input button, it will be p...

From [HTMLdiscussion group] 2017-06-07 09:24:14 0  4  925

javascript - Data reception is slow. Is it an interface problem? Is this mainly a front-end optimization or a background optimization?

These interfaces are very slow to receive. Is it because loading other things blocks the loading? Or is there ...

From [HTMLdiscussion group] 2017-06-05 11:13:56 0  2  925

How to add this kind of border in html - css?

As shown in the picture, how can we achieve this effect by adding borders to the four corners of the picture?

From [HTMLdiscussion group] 2017-05-16 13:34:16 0  6  925

求解，为什么这样用nth-of-type选不了元素？

From [HTMLdiscussion group] 2016-11-07 16:03:38 0  1  925

Html的组件有哪些 ？

From [HTMLdiscussion group] 2016-12-20 16:19:41 0  2  924

Why doesn't my Bootstrap navigation bar render correctly?

I'm trying to make a navigation bar using Bootstrap4 but my code doesn't seem to work. My code is almost ident...

From [HTMLdiscussion group] 2023-09-16 16:14:06 0  1  924

javascript - Question about outputting </script> in <script> tag

Problem description: {code...} cannot be output, and an error message is reported: Uncaught SyntaxError: Inval...

From [HTMLdiscussion group] 2017-06-14 10:52:30 0  3  924

javascript - How to make a PC website appear dynamically as the mouse scrolls

This is the demo URL: http://demo.cssmoban.com/csst... How to make the content in the web page appear dynamica...

From [HTMLdiscussion group] 2017-06-13 09:24:09 0  6  924