cours-MDS/b2-cwd/integration/live/session1et2/css-et-selecteurs.txt

.current
{

}

#main-menu
{

}

p
{

}

h1
{

}

https://www.w3schools.com/cssref/css_selectors.asp

div > p 
{

}

.current + li
{
    background-color:blue;
}

.current ~ li
{
    background-color:red;
}