href='/' and hideFocus='true'_html/css_WEB-ITnose in the tag

One: href="/"

Connect to the root directory

这是相对路径的根目录表示方法 可以写为 http://class.qq.com/">腾讯精品课 （绝对路径写法）也可以为 腾讯精品课一样的效果  有时候为了转移方便用相对路径

Two: hideFocus="true"

hideFocus means hiding focus, which has the function of disabling object focus. Its function is equivalent to:
onFocus="this.blur()"
Its value is a Boolean value, such as hideFocus=true. You can also omit the assignment and write hideFocus directly.
If the code you gave does not have hideFocus, then when the mouse clicks on the hyperlink, a dotted box will appear outside, which is the focus. When using hideFocus, there will be no dotted frame.

Under IE, you need to add the hidefocus="true" attribute to the structure of tag a. That is:

In browsers such as FF, it is relatively easy. Just define the style outline:none; for label a.