摘要： Have you ever considered implementing unit tests for a project but dismissed the idea because the module you wanted to test either had too many dependencies or it was so difficult to isolate the unit itself that the tests started to look like integration tests? Or perhaps setting up and configur 阅读全文

摘要： Standards-aware web designers generally know of the z-index bug in all versions of Internet Explorer (though, version 8 is rumored to fix it). In the W3C’s specs, z-index is designed to affect the stacking order of positioned elements on a web page. So, an element with a z-index of 2 should always 阅读全文