#app{padding:15px;height:100vh;font-size:18px}.btn-container{display:flex}.btn-container *{width:50%;height:30px;border:none;background-color:#999;text-align:center;padding:0;line-height:30px;text-decoration:none;color:#000;border:1px solid #fff}#preview-container h2,#preview-container h4{display:inline-block;margin:0}#preview-container p{margin-bottom:15px}#header span{display:inline-block;width:32%;text-align:center}.btn{margin:20px 0;height:50px;width:100%}.transaction-card{display:flex;flex-direction:column;justify-content:space-between;height:90%}