body{margin:0;padding:0}.flex{display:flex;align-items:center}.flex-only{display:flex}.align-items{align-items:center}.flex-b{justify-content:space-between}.flex-a{justify-content:space-around}.flex-column{flex-direction:column}.flex-center{display:flex;align-items:center;justify-content:center}.pointer{cursor:pointer}.flex-end{justify-content:flex-end}.mg-top-20{margin-top:20px}