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HTML 

              
                <!-- overdesigned stuff -->

<sup>Make things easier, not harder</sup>
<h1><i>Dead</i> <i>simple</i> <i>grid.</i></h1>


<!-- also a bit overdesigned stuff -->
<div class="lead">
	<p>A simpler to configure variant of Chris Coyiers ”Expando Grid”</p>
	<p>
		source: <a href="https://codepen.io/chriscoyier/pen/GRYKObj" target="_blank">codepen.io/chriscoyier/pen/GRYKOb</a>
		<u class="hello-i-am-a-line"></u>
		<b>Reasoning</b>
		Use simple CSS-variables to make these "auto-grids" simpler and more "modular". Also i've got somewhat of a strong belief in thinking "element first" and screen sizes second. In practice this means that we simply create our elements, say a card, and that element should then scale to whatever. Or like in this case scale to whatever columns within some defined reason.
	</p>
</div>


<!-- your bog standard other stuff -->
<div class="grid">
  <div class="card">
    <h2>Lorem ipsum</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>Is Simply</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>Dummy Text</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>Of The Typesetting</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>Industry</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>It Has Survived</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>Since The</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <h2>1600's</h2>
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
</div>


<hr>
<h3>Using data-attribute to control max columns</h3>

<p class="lead">data-columns="2"</p>
<div class="grid" data-columns="2">
  <div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
    <div class="card">
    <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
  </div>
  </div>

<p class="lead">data-columns="3"</p>
<div class="grid" data-columns="3">
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
</div>

<p class="lead">data-columns="4"</p>
<div class="grid" data-columns="4">
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
	<div class="card">
		<p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Adipisci illo nobis quisquam. Officiis earum culpa sit in consequuntur!</p>
	</div>
</div>

<p>...and we could go on and on.</p>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css2?family=Pacifico&display=swap');

/*
	The stuff that matters
	Short reasoning: Application logic shouldn't mix with obvious config params.
	-
	see Chris Coyiers 'Expando Grid': https://codepen.io/chriscoyier/pen/GRYKObj
*/


/* 1. Define critical things here */
:root {
	--grid-columns: 5;
	--grid-min-width: 250px;
	--grid-gap: 2.5rem;
}


/* 2. Apply here */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, max(var(--grid-min-width), 100% / calc(var(--grid-columns) + 1))), 1fr));
  gap: var(--grid-gap);
}


/* ... and we're done ... */


/* 
	but wait -- couldn't we do more stuff?
	...sure, let's use data-attributes and modify local CSS variables
*/

.grid[data-columns] {
	
	/* define */
	&[data-columns="1"]{ --grid-columns: 1; }
	&[data-columns="2"]{ --grid-columns: 2; }
	&[data-columns="3"]{ --grid-columns: 3; }
	&[data-columns="4"]{ --grid-columns: 4; }
	&[data-columns="5"]{ --grid-columns: 5; }
	&[data-columns="6"]{ --grid-columns: 6; }
	
	/* apply */
	grid-template-columns: repeat(auto-fit, minmax(min(100%, max(var(--grid-min-width), 100% / calc(var(--grid-columns) + 1))), 1fr));
}







/*----------------------------------------

	# MISC IRRELEVANT STYLING

----------------------------------------*/

.grid[data-columns]{
	margin-bottom: var(--spacing-double);
	> div { padding: var(--spacing); background: rgba(255,255,255,0.1); border-radius: 1rem; }
}

:root {
	--spacing: 2rem;
	--spacing-half: 1rem;
	--spacing-double: 4rem;
}


/* reset: Josh's Custom CSS Reset @ https://www.joshwcomeau.com/css/custom-css-reset/ */
*,*::before,*::after,input,select,form{box-sizing:border-box}*{margin:0}html,body{height:100%}body{line-height:1.5;-webkit-font-smoothing:antialiased}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}

body {
	height: auto;
  background: #111;
  color: #fff8;
  font: 300 100%/1.5 system-ui;
  padding: 5svh;
	background: linear-gradient(to top, hsl(260, 84%, 5%), hsl(260, 84%, 0%)); 
	background-attachment: fixed;
}

body, html { min-height: 100%; }

body {
		&::before {
		width: 100%; display: block; content: '';
		height: .1rem;  position: absolute; top: 0; left: 0;
		background: linear-gradient(to right, cyan, magenta, yellow);
	}
}


/* irrelevant garbage */
* { text-align: center; } /* :) */
h1,
h2,
h3 {
  font-weight: 400;
  color: #fff9;
  line-height: 1.1;
  letter-spacing: 0.06rem;
	word-break: break-all;
}

h1 { 
	font-family: 'Pacifico', cursive, system-ui;
	font-size: clamp(3.8rem, calc(5vw + 1rem), 5.8rem);
	margin-bottom: var(--spacing-half);
	text-transform: lowercase;
	color: #fff;
	position: relative;
	z-index: 1;
}

h2 { margin: 0 0 var(--spacing-half); font-size: clamp(100%, calc(1vw + 1rem), 125%); }
h3 {  margin: 0 0 var(--spacing); font-size: clamp(125%, calc(1vw + 1rem), 150%);  }

/* dark voodoo stuff */
sup {
	text-transform: uppercase;
	font-size: 70%;
	color: rgba(255, 255, 255, 0.4);
	letter-spacing: .15rem;
	&:after, &:before {
		display: inline-block;
		content: '---------------';
		word-break: none;
		letter-spacing: -.1rem;
		color: rgba(255, 255, 255, 0.3);
	}
	&:after { margin-left: .5rem; }
	&:before { margin-right: .5rem; }
}



a { color: currentcolor; text-underline-offset: .2rem; text-decoration: none; }
a:hover, a:active, a:focus { color: cyan; }

i { font-style: normal; }

/* why not */
@keyframes why-not {
	0% { opacity: 1 }
	90% { opacity: 1; text-shadow: 0 0 var(--spacing-double) currentcolor; }
	95% { opacity: 0; text-shadow: 0 0 20rem currentcolor; transform: rotateX(0); }
	100% { opacity: 1; text-shadow: 0 0 20rem currentcolor; transform: rotateX(25deg); }
}

h1 {
	i:nth-child(1){ color: cyan; text-shadow: 0 0 var(--spacing-double) currentcolor; }
	i:nth-child(2){ color: magenta; text-shadow: 0 0 var(--spacing-double) currentcolor; }
	i:nth-child(3){ color: yellow; text-shadow: 0 0 var(--spacing-double) currentcolor;}
	
	i {
		display: inline-block;
		animation: why-not alternate 1s linear infinite;
		&:nth-child(2){ animation-delay: 20ms; }
		&:nth-child(3){ animation-delay: 40ms; }
	}
}


.lead {
	margin: 0 auto var(--spacing-double);
	position: relative;
	z-index: 10;
	width: 100%; max-width: 50rem;
	p { margin: 0 auto; }
	p:first-child { font-size: 150%; color: white; margin-bottom: calc(var(--spacing) / 4); }
}

u.hello-i-am-a-line, hr {
	height: .5px;
	display: block;
	margin: var(--spacing-double) auto;
	max-width: 70%;
	width: 100%;
	border: 0;
	background: rgba(255,255,255,0.2);
}
!

JS
!
999px

Console