what does css mean code example

Example 1: what does css stand for

"Cascading Style Sheets"

CSS is a computer language for laying out
and structuring web pages (HTML or XML)

Example 2: what does css stand for

/**
Cascading Style Sheets
CSS is the acronym of “Cascading Style Sheets”. CSS is a computer language for laying out and structuring web pages (HTML or XML).*/

Example 3: * css meaning

.parent {
    background: red;
}
.child {
    overflow: hidden;
    height: 0;
    background: blue;
    -webkit-transition: all .8s ease;
    -moz-transition: all .8s ease;
    -ms-transition: all .8s ease;
    -o-transition: all .8s ease;
    transition: all .8s ease;
    color: white;
}
.parent:hover > .child {
    height: 30px;
    display: block;
}