CSS-da elementlarni kengayishini o'chirish

Qoida tariqasida, oldingi darslarda tasvirlangan kengayish zararli va siz undan qutulishni xohlaysiz. Shu maqsadda CSS-da box-sizing xususiyati mavjud. Agar siz unga border-box qiymatini bersangiz, u holda padding ham, border ham blokni kengaytirmaydi:

<div id="elem1"></div>
<div id="elem2"></div>

#elem1 {
	width: 100px;
	height: 100px;
	background: #f1f1f1;
	margin-bottom: 20px;
}

#elem2 {
	width: 100px;
	height: 100px;
	background: #f1f1f1;
	padding: 25px; /* padding beramiz */
	border: 10px solid green;  /* border beramiz */
	box-sizing: border-box;  /* kengayishni o'chiramiz */
}