hotelHomestayWx/node_modules/uniapp-qrcode/demo/pages/index/index.wxss

/**index.wxss**/
page {
    background-color: #439057;
}

.page {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.container {
	padding-bottom: 10rpx;
}

.panel {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: stretch;
    box-sizing: border-box;
    width: 710rpx;
    margin-top: 40rpx;
    border-radius: 10rpx;
    background-color: #fff;
}

.header {
    height: 140rpx;
    background-color: #f0f0f0;
    border-radius: 10rpx 10rpx 0 0;
}

.barcode {
    display: flex;
    height: 320rpx;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.barnum {
    width: 670rpx;
    height: 100rpx;
    line-height: 100rpx;
    font-size: 38rpx;
    font-weight: bold;
    text-align: center;
    letter-spacing: 10rpx;
    white-space: nowrap;
}

.barcode > canvas {
    width: 680rpx;
    height: 200rpx;  
}

.qrcode {
    height: 420rpx;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
}

.qrcode > canvas {
    width: 420rpx;
    height: 420rpx;
}