mac chrome下input submit样式

input submit指定样式不起作用

There will be three new appearance constants for buttons. They are push-button, bevel-button and button. input will be using push-button by default. This constant maps to the Aqua system button. When this appearance constant is specified, the only way to disable the Aqua look will be by setting the appearance constant to none (which will give you a completely blank slate on which to build your own button look) or by specifying your own background and border properties. Specifying the background/border will result in the Aqua appearance being disabled and a more platform-neutral look being used.

来自：https://www.webkit.org/blog/28/buttons/

解决办法

/* 指定border或者background就可以了 */
input[type=submit] {
	border: 1px solid #CCC;
	/* background: red; */
}