x
<html><head><style> .div1 { width: 300px; height: 100px; border: 1px solid blue;}.div2 { width: 300px; height: 100px; padding: 50px; border: 1px solid red;}</style></head><body><h1>Without box-sizing</h1><div class="div1">This div is smaller (width is 300px and height is 100px).</div><br><div class="div2">This div is bigger (width is also 300px and height is 100px).</div></body></html>