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HTML

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HTML

              
                <!-- Use the data-col attribute to define how many columns does the container have to fill -->

<div class="grid">
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
	<div data-col="1"></div>
</div>
              
            
!

CSS

              
                .grid {
	max-width: 940px; /* Grid size */
	padding: 0 10px; /* Gutter on outside */
	display: grid;
	grid-column-gap: 20px; /* Gutter size */
	grid-template-columns: repeat(12, 1fr);
}

.grid [data-col="1"] {
	grid-column: span 1;
}

.grid [data-col="2"] {
	grid-column: span 2;
}

.grid [data-col="3"] {
	grid-column: span 3;
}

.grid [data-col="4"] {
	grid-column: span 4;
}

.grid [data-col="5"] {
	grid-column: span 5;
}

.grid [data-col="6"] {
	grid-column: span 6;
}

.grid [data-col="7"] {
	grid-column: span 7;
}

.grid [data-col="8"] {
	grid-column: span 8;
}

.grid [data-col="9"] {
	grid-column: span 9;
}

.grid [data-col="10"] {
	grid-column: span 10;
}

.grid [data-col="11"] {
	grid-column: span 11;
}

.grid [data-col="12"] {
	grid-column: span 12;
}

/* Only for this demo */
body {
	margin: 0;
}

.grid {
	height: 100vh;
	margin: 0 auto;
}

.grid div {
	background: red;
}
/* Only for this demo */
              
            
!

JS

              
                
              
            
!
999px

Console