I recently read a few articles about css hack and thought it would be a good idea to sort them out.
Many people don’t understand the principle of css hack. In fact, everyone knows that different browsers have different parsing levels of CSS, which will lead to different effects on the generated pages; especially for browsers like IE that are addictive. For browsers, at this time we need to write different CSS for different browsers (especially IE). This process is called css hack. Instead of that hack, it can be said that css hack is a method that relies on different browsers. It is a strategy of "saving the country through curves" to achieve compatibility due to different rules and standards. Even so, we still hope that the world will be unified and have a unified standard that can unify browser specifications T T
css hack is mainly based on
1 .Browsers have different support for CSS and parsing results;
2. Priority relationship in CSS.
There are three commonly used CSS hacks, CSS internal hacks, selector hacks, and HTML header references. The first one is the most commonly used.
A.css internal hack:
CSS internal hack syntax is like this selector{?property:value?;} For example, IE6 can recognize underline "_" and asterisk "*", IE7 can recognize asterisk "*", But the underscore "_" cannot be recognized, and firefox cannot recognize both. Regarding the writing order, the CSS of browsers with strong recognition capabilities is generally written at the end.
<style> div{ background:green;/*forfirefox*/ *background:red;/*forIE6 IE7*/ } </style>
In this case, you have successfully hacked IE6 and 7;
For another example, only IE6 cannot recognize the writing method of "!important", but other versions of IE and modern browsers can recognize it
Other versions of IE and modern browsers, as well as "+", "

在css中,可用list-style-type属性来去掉ul的圆点标记,语法为“ul{list-style-type:none}”;list-style-type属性可设置列表项标记的类型,当值为“none”可不定义标记,也可去除已有标记。

区别是:css是层叠样式表单,是将样式信息与网页内容分离的一种标记语言,主要用来设计网页的样式,还可以对网页各元素进行格式化;xml是可扩展标记语言,是一种数据存储语言,用于使用简单的标记描述数据,将文档分成许多部件并对这些部件加以标识。

在css中,可以利用cursor属性实现鼠标隐藏效果,该属性用于定义鼠标指针放在一个元素边界范围内时所用的光标形状,当属性值设置为none时,就可以实现鼠标隐藏效果,语法为“元素{cursor:none}”。

转换方法:1、给英文元素添加“text-transform: uppercase;”样式,可将所有的英文字母都变成大写;2、给英文元素添加“text-transform:capitalize;”样式,可将英文文本中每个单词的首字母变为大写。

在css中,rtl是“right-to-left”的缩写,是从右往左的意思,指的是内联内容从右往左依次排布,是direction属性的一个属性值;该属性规定了文本的方向和书写方向,语法为“元素{direction:rtl}”。

在css中,可以利用“font-style”属性设置i元素不是斜体样式,该属性用于指定文本的字体样式,当属性值设置为“normal”时,会显示元素的标准字体样式,语法为“i元素{font-style:normal}”。

在css3中,可以用“transform-origin”属性设置rotate的旋转中心点,该属性可更改转换元素的位置,第一个参数设置x轴的旋转位置,第二个参数设置y轴旋转位置,语法为“transform-origin:x轴位置 y轴位置”。


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