houseworking/miniapp/app/pages/introduce/index.wxss

page {
    background-color: #fff;
}

.btn-book {
    display: block;
    height: 80rpx;
    line-height: 80rpx;
    text-align: center;
    position: fixed;
    bottom: 60rpx;
    background-color: #00a0e9;
    color: #fff;
    font-size: 28rpx;
    left: 40rpx;
    right: 40rpx;
}