* {
	box-sizing: border-box;
}
body {
	font-family: sans-serif;
	font-size: 80%;
	background: #ccc;
	line-height: 1.2;
	margin: 4em;
}
img {
  width: 100%;
}
article {
  padding: 20px;
  border: 1px solid #999;
  border-radius: 5px;
  background: #fff;
}
a:link,
a:visited {
  color: black;
}
h1 {
    margin-top: 0;
    margin-left: 0.75rem;
}
main {
	columns: 250px;
	column-gap: 20px; 
}
article {
	break-inside: avoid-column;
	margin-bottom: 1rem; 
}
/* 
Source : 
https://codepen.io/LasseStilvang/pen/BrpqKx
Origine :
https://labs.jensimmons.com/2017/01-009D.html
Thanks to them/Merci à eux !
*/