CSS选择器：具有以下任一类的班级子级

Question

I have a requirement for a CSS selector where all children of a given class which contain one of n classes are affected.

My container is .k-editor and the children I am looking to affect are all the bootstrap columns col-xs-1, col-xs-2 etc.

So I tried this

.k-editor 
.col-xs-1, .col-sm-1, .col-md-1, .col-lg-1,
.col-xs-2, .col-sm-2, .col-md-2, .col-lg-2,
.col-xs-3, .col-sm-3, .col-md-3, .col-lg-3,
.col-xs-4, .col-sm-4, .col-md-4, .col-lg-4,
.col-xs-5, .col-sm-5, .col-md-5, .col-lg-5,
.col-xs-6, .col-sm-6, .col-md-6, .col-lg-6,
.col-xs-7, .col-sm-7, .col-md-7, .col-lg-7,
.col-xs-8, .col-sm-8, .col-md-8, .col-lg-8,
.col-xs-9, .col-sm-9, .col-md-9, .col-lg-9,
.col-xs-10, .col-sm-10, .col-md-10, .col-lg-10,
.col-xs-11, .col-sm-11, .col-md-11, .col-lg-11,
.col-xs-12, .col-sm-12, .col-md-12, .col-lg-12 {
    padding: 0;
}

but this seems to ignore the .k-editor parent and apply itself to all columns.

Anyone able to provide some input on what I might be doing wrong?

Answer 1

This code can be shortened:

.keditor [class^="col"] {
     padding: 0;
}

Answer 2

This is the shortest solution: .k-editor [class^="col"] will match all the children of .k-editor whose class starts with col .

The other way is to prefix .k-editor to each of your comma-separated selectors:

.k-editor .col-xs-1, .k-editor .col-sm-1, .k-editor .col-md-1, .k-editor .col-lg-1 etc