How to reference nested classes with css?

Answer 1

In CSS, classes need to be prefixed by a ., ids need to be prefixed by #, and elements don't need to be prefixed at all.

This is how you need to declare your CSS:

.box1 .box-body i {
   width: 30px;
}

Note that box1 and box-body are both classes, while i is an element.

---

Example:

<div class="class"></div>
<div id="id"></div>
<div></div>

I have listed three different <div> elements. This is how they would be accessed in CSS:

// first div
.class {
[some styling]
}

// second div
#id {
[some styling]
}

// third div
div {
[some styling]
}

Answer 2

Selectors for classes in CSS need a ".":

.box1 .box-body i{/*your style*/}

Maybe you should take a look at this page:

Selectors

Answer 3

   <style type="text/css">
   .box1 .box-body i{width: 30px;}
   </style>

Answer 4

The classes in your CSS need periods before them. Note i doesn't since it's an element not a class.

<style type="text/css">
    .box1 .box-body i{width: 30px;}
</style>

Answer 5

You just need to know how css selectors work. Here is brief description about css selectors.

In your case,

.box .box-body i{
  width:30px;
}

space between two selectors defines second element is child of first. In your case, element i is child element of element which has box-body class. and that element is child element of class which has .box class.