What is the purpose and function of font-size:100%?
This article shows you what the purpose and function of font-size:100% are, the content is concise and easy to understand, and can definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.
The code is as follows:
H2,h3,h4,h5,h6,h7 {font-size:100%;font-weight:normal;}
Input,select,textarea,samp {font-size:100%;}
Seeing some css resets, what is the purpose and purpose of setting font-size:100%?
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If you set body {font-size:12px;}
But H2 will not inherit this 12px, it will increase the font size by a certain percentage, but if you specify font- for the H2 test
Size:100%; it inherits the font size set by body.
1. It changes the default size.
two。 These elements themselves do not inherit the font size of the parent, but can be inherited automatically when font-size:100% is set.
Line-height: normal | length
Parameters:
Normal: default line height
Length: percentage number | length value consisting of floating point numbers and unit identifiers, which is allowed to be negative. The percentage value is based on the height size of the font. See length unit
Description
Retrieves or sets the row height of the object. That is, the distance between the bottom of the font and the inner top of the font.
If the row contains multiple objects, the maximum row height is applied. The row height cannot be negative at this time.
The corresponding script feature is lineHeight. Please refer to other bibliographies I have written.
Example
The code is as follows:
Div {line-height:6px;}
Div {line-height:10.5;}
Be careful
1. Using line-height only works on text and fails when it comes to pictures
two。 You can see the effect of instant line-height with dreamweaver.
3. Negative values can be used when using line-height
It should be noted that there are slight differences in the solution of line-height among browsers, and there will be differences in 1px up and down. If the row height is even, the interpretation of most browsers is relatively normal. If it is an odd number, some browsers will have more 1px than the next, while others will have more 1px than the top. For some websites with more stringent requirements, it is recommended to use even numbers when designing the row height.
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