em because if we have 3 containers nested inside of each other with 2em, then the child element will have 8 times more font-size than it's grand parent container (it means they cascade) https://www.w3schools.com/cssref/tryit.asp?filename=trycss_unit_em
https://youtu.be/-GR52czEd-0?t=279On which day we change which files
Git will even show us which lines of code we added and which lines of code we removed<link rel="stylesheet" href="responsive.css" media="screen and (max-width: 900px)">
2. @media query without <link> @media screen and (max-width: 900px) {
    /* conditional CSS */
}adoggloballygit config --global alias.adog "log --all --decorate --oneline --graph"Which can lately be run using the follwing commandgit adog
After the command execution, In global config file will be added the following[alias]
	adog = log --all --decorate --oneline --graph<header> and <footer> elements can be used in <article>. Example:
<article>
    <header>
        <h2>some header</h2>
    </header>
    <p> some paragraph</p>
    <p> some other paragraph</p>
    <footer>
        written by Quentin Watt
    </footer>
</article>
.container {
  display: flex;
  flex-direction: row-reverse;
}The direction of the flexible items inside the .container is set in reverse order.