.btn_center_AA .contents-container{display: flex;  justify-content: center;  align-items: center; }	

.btn_center_AA .contents-container .btn{ width:auto; float: left; padding: 10px 40px; background-color: #333; color: #fff; font-size: var(--tx-sm-size); }	
.btn_center_AA .contents-container .btn:hover{ width:auto; float: left; padding: 10px 40px; background-color: #000; color: #fff; font-size: var(--tx-sm-size); }