CSS-de web sahypasynyň üç sütünli düzüminiň shemasy

Indi üç sütünli düzümi ýasaýaly. Bize nämäniň alnyp gelmelidiginiň mysaly:

Başlangyç üçin web sahypasynyň gurluşyny ýazaly:

<div id="wrapper">
	<div id="header">
		header
	</div>
	<div id="container">
		<div id="left">
			left sidebar
		</div>
		<div id="content">
			content
		</div>
		<div id="right">
			right sidebar
		</div>
	</div>
	<div id="footer">
		footer
	</div>
</div>

"Wrapper"-iň giňligini kesgitläp, ony merkeze ýerleşdirýäris:

#wrapper {
	width: 1100px;
	margin: 30px auto;
	border: 1px solid black;
}

"Container"-daky bloklary hatarlalyň:

#container {
	display: flex;
}

Indi bloklaryň giňliklerini şeýle belleýäris, ýöne jemi "wrapper"-iň giňligine deň bolmaly:

#content {
	width: 700px;
}
#left {
	width: 200px;
}
#right {
	width: 200px;
}

Indi bolsa margin goşup, olaryň giňligini mazmundan aýyryň:

#content {
	width: 660px;
}
#left {
	width: 200px;
	margin-right: 20px;
}
#right {
	width: 200px;
	margin-left: 20px;
}

Galan stilleri goşaly:

#content {
	width: 660px;
	height: 700px;
	padding: 20px;
	border: 1px solid black;
}
#left {
	width: 200px;
	margin-right: 20px;
	padding: 20px;
	border: 1px solid black;
}
#right {
	width: 200px;
	margin-left: 20px;
	padding: 20px;
	border: 1px solid black;
}

Jemleýji kody ýazaly:

<div id="wrapper">
	<div id="header">
		header
	</div>
	<div id="container">
		<div id="left">
			left sidebar
		</div>
		<div id="content">
			content
		</div>
		<div id="right">
			right sidebar
		</div>
	</div>
	<div id="footer">
		footer
	</div>
</div>

* {
	box-sizing: border-box;
}

#wrapper {
	width: 1100px;
	margin: 30px auto;
	border: 1px solid black;
}
#header {
	height: 200px;
	padding: 20px;
	border: 1px solid black;
}
#container {
	display: flex;
}
#content {
	width: 660px;
	height: 700px;
	padding: 20px;
	border: 1px solid black;
}
#left {
	width: 200px;
	margin-right: 20px;
	padding: 20px;
	border: 1px solid black;
}
#right {
	width: 200px;
	margin-left: 20px;
	padding: 20px;
	border: 1px solid black;
}
#footer {
	height: 200px;
	padding: 20px;
	border: 1px solid black;
}