建议你不要定义这个的宽度，因为这个会与填充按钮的文本宽度相同，不管用户选择的浏览器定义的字体大小是多少。
It is recommended that you not define a width on this at all, since it will be as wide as the text that fills the button, no matter what browser-defined font size the user picks.
要更改色调，需点击图层面板底端的 创建新的填充或调节图层 按钮，并选择 色相/饱和度 。
To change the color click on the Create new fill or adjustment layer icon at the bottom of the Layers Panel and choose Hue/Saturation .
在这个例子中，需要用按钮填充工具栏。
In this case, you know that you are asked to fill the toolbar given with your buttons.
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