.canvas-container{border:1px solid #050505}.preview-image{height:100%}.checkerboard{background-color:#fff;background-image:linear-gradient(45deg,#e5e7eb 25%,transparent 0),linear-gradient(-45deg,#e5e7eb 25%,transparent 0),linear-gradient(45deg,transparent 75%,#e5e7eb 0),linear-gradient(-45deg,transparent 75%,#e5e7eb 0);background-position:0 0,0 10px,10px -10px,-10px 0;background-size:20px 20px;height:400px}.loading-btn{line-height:1;padding:7px}.spinner{animation:spin 1s linear infinite;border:2px solid #f3f3f3;border-radius:50%;border-top-color:#007bff;display:inline-block;height:16px;margin-right:1px;vertical-align:middle;width:16px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}