[ad_1] https://i.ytimg.com/vi/tWGFf0uKcrs/hqdefault.jpg In this lesson we talk about how the bootstrap grid system works – how to respond to the device width and change the number of columns (e.g. 3 columns on desktops, 2 columns on tablet, 1 column on mobile phone). Lesson 1 link: https://youtu.be/h_iiv3AUcKQ Lesson 2 link: https://youtu.be/CFLF87gJU9U Lesson 4 link: https://youtu.be/fSoxdkQISM0 Original…