* {
    font-family: arial;
}

h2 {
    text-align: center;
}


/*Selects Multiple Elements By Seperating Them With A Comma*/
p,
button {
    color: red;
}

/*Selects All Inside Of Descendant Elements*/
#outerDiv p {
    color: blue;
}


/* Selects All Inside Parent Direct Descendents */
#innerDiv>p {
    color: green;
}


/* Selects All Elements Placed Immediately After An Element */
h3+p {
    color: blue;
    text-decoration: underline;
}

/* Selects All Elements Placed Immediately Before Element */
p~h4 {
    color: orangered;
}