.float-box { position: fixed; } .circle-box { display: flex; align-items: center; justify-content: center; width: 160rpx; height: 160rpx; transform: translate(-50%, -50%); .circle { background-color: #1060E3; width: 130rpx; height: 130rpx; text-align: center; line-height: 120rpx; border-radius: 50%; color: #fff; font-size: 90rpx; box-sizing: border-box; } }