.cardsides{text-align:center;cursor:pointer;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.cardsides input{display:none!important}.cardsides input:checked~.cardfront{display:none}.cardsides input:checked~.cardback{display:block}.cardsides input:not(:checked)~.cardback{display:none}.cardsides .btn{width:100px;margin:0 auto;padding:6px;font-family:arial;font-size:14px;text-align:center;color:#999;border:2px solid #bbb;background:#ddd;-webkit-border-radius:8px;-moz-border-radius:8px;border-radius:8px}