在新引导程序之后导航栏和项目之间没有空格？

So I'm messing around with the new bootstrap V3, and there is absolutely one thing that is driving me insane. There is no space between a fixed top navbar and the item that follows it. I've tried changing the padding on the item(whether it be jumbotron or carousel) and the padding on the navbar to no avail. Its literally driving me insane. any fixes? So I'm messing around with the new bootstrap V3