Teacher, are there any problems with some of the codes in the video?
手机用户1578927667
手机用户1578927667 2020-02-03 16:17:03
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For example, if class="nav-link active" is not set in the a tag in the capsule navigation tab page, it will not be displayed correctly. You also need to quote <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>, which requires a lot of code. displayed correctly?

手机用户1578927667
手机用户1578927667

reply all(1)
手机用户1578927667

I see

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