Complete the code to apply a Bootstrap class that makes text center aligned only on small screens and larger.
<p class="text-[1]-center">Hello World</p>
The class text-sm-center centers text starting from small screens (≥576px) and up.
Complete the code to create a Bootstrap column that takes full width on extra small screens and half width on medium screens and larger.
<div class="col-12 col-[1]-6">Content</div>
The class col-md-6 sets the column to half width starting at medium screens (≥768px).
Fix the error in the Bootstrap class to make the button visible only on large screens and larger.
<button class="d-[1]-block d-none">Click me</button>
The class d-lg-block shows the button as block starting at large screens (≥992px), and d-none hides it on smaller screens.
Fill both blanks to create a responsive margin that is 3 units on medium screens and 5 units on extra large screens.
<div class="m-[1]-3 m-[2]-5">Box</div>
The classes m-md-3 and m-xl-5 set margin 3 on medium screens (≥768px) and margin 5 on extra large screens (≥1200px).
Fill all three blanks to create a responsive grid with 1 column on extra small, 2 columns on small, and 4 columns on large screens.
<div class="row"> <div class="col-[1] col-[2]-6 col-[3]-3">Item</div> </div>
The classes col-12 (full width) for extra small, col-sm-6 (half width) for small screens, and col-lg-3 (quarter width) for large screens create the desired responsive grid.