Preview:
    func setBalanceLabel(_ balance: String) {
        let height = balanceLabel.layer.frame.height
        balanceLabel.text = "  " + balance + "  "
        balanceLabel.sizeToFit()
        balanceLabel.layer.frame.size.height = height
        balanceLabel.layer.cornerRadius = balanceLabel.layer.frame.height/2
    }
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