How do I create a picture grid system with equal size squares vertically and horizontally alligned? This is a 2 by 2 picture system below. For some reason the images are unalligned. I want to be able to customize square later to make them rectangle with certain measurements if needed. Prefer to utilize bootstrap also
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<div class="container">
<div class="row">
<div class="col"><img src="https://www.woodlandtrust.org.uk/media/100078482/Sycamore01.jpg?cb=-11897985&preset=gallery-tab-main-image"></div>
<div class="col"><img src="https://statesymbolsusa.org/sites/statesymbolsusa.org/files/styles/symbol_thumbnail__medium/public/primary-images/Applesfreshpicked.jpg?itok=YmYkBfY7"></div>
<div class="w-100"></div>
<div class="col"><img src="https://openbookphilly.com/wp-content/uploads/2016/11/bookstack.png"></div>
<div class="col"><img src="https://media.wired.com/photos/5b86fce8900cb57bbfd1e7ee/master/w_582,c_limit/Jaguar_I-PACE_S_Indus-Silver_065.jpgColumn"></div>
</div>
</div>