Overriding css style? | 易学教程

问题

I look on Stack Overflow, and didn't find the solution, I know how to override style if style exists, just change its property. But now I have a strange style to override

Here is an example of what I have

First I have this one:

.slikezamenjanje img{
    max-width: 100%;
    max-height:150px;
    padding-right:7px;
}

Now I need to override that style with just this one:

#zoomTarget .slikezamenjanje img {
    max-width: 100%;
}

The problem is that first style appends second, but I don't want that, in this second style what I need is just one line, not to append from the first style?

回答1:

Instead of override you can add another class to the element and then you have an extra abilities. for example:

HTML

<div class="style1 style2"></div>

CSS

//only style for the first stylesheet
.style1 {
   width: 100%;      
}
//only style for second stylesheet
.style2 {
   width: 50%;     
}
//override all
.style1.style2 { 
   width: 70%;
}

回答2:

You just have to reset the values you don't want to their defaults. No need to get into a mess by using !important.

#zoomTarget .slikezamenjanje img {
    max-height: auto;
    padding-right: 0px;
}

Hatting

I think the key datum you are missing is that CSS comes with default values. If you want to override a value, set it back to its default, which you can look up.

For example, all CSS height and width attributes default to auto.

来源：https://stackoverflow.com/questions/19302877/overriding-css-style

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css

css3

styles

overriding

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