Blazor单击图像按钮后，图像会有一个边框

<button @onclick="HandleButtonClick">
    <img src="image.jpg" alt="Image Button" />
</button>

private bool isImageClicked = false;

private void HandleButtonClick()
{
    isImageClicked = !isImageClicked;
}

<button @onclick="HandleButtonClick" class="@GetButtonClass()">
    <img src="image.jpg" alt="Image Button" />
</button>

private string GetButtonClass()
{
    if (isImageClicked)
    {
        return "image-button clicked";
    }
    else
    {
        return "image-button";
    }
}

.image-button {
    border: none;
}

.image-button.clicked {
    border: 2px solid blue;
}