Selectors code example

Example 1: what is a css selector

h1 {
  color: red;
}

In this CSS code example that sets the color of all h1s to red 
the "h1" is the selctor because we are applying this style to 
the h1s.

Example 2: Selectors

/* Any Element With Class Title */
.title {
}

/* Any Element With Id Title  */
#nav {
}

/* Any Element With Tag Title  */
div {
}

/* Any Element With Tag Title  */
h2 {
}