css how to make text italic

.my_italic_class{
  font-style: italic;
}

/* I know i already made a HOW TO MAKE CSS TEXT ITALIC but here's one 
100% css */
#italic-selector {font-style:italic;}

.example {
  font-style: italic;
}

<style>
#italic{
  font-style: italic;
  } </style> <p id="italic">This is my italic text. :)</p>