* 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;
}

Source: stackoverflow.com

* css meaning

cascade style sheet

Similar codes

22 votes203 views4 answers
Grid center align css
CSS
45 votes204 views6 answers
How to write css in html
CSS
8 votes185 views2 answers
Invert png color css
CSS
24 votes206 views3 answers
Link font size html
CSS
88 votes323 views6 answers
Css border radius
CSS
0 vote213 views1 answer
Imporatn css
CSS
17 votes199 views1 answer
Css opacity example
CSS
6 votes198 views2 answers
Remove outline of input css
CSS
0 vote171 views1 answer
Padding 4 values
CSS
4 votes207 views2 answers
Bootstrap icons sdn
CSS