.activity-header {
	display: grid;
	grid-template-columns: 48px auto;
	grid-template-rows: auto;
	grid-column-gap: .5rem;
	grid-row-gap: .5rem;
  grid-template-areas:
  	"activity-header-symbol activity-header-science"
  ;
}
.activity-header > span {
	display: block;
}
.activity-header > span.activity-header-symbol {
	width: 48px;
	height: 48px;
	border-radius: 5px;
}

/* Anpassungen: Mobil */

@media only screen and (max-width: 619px) {
	.activity-header {
		grid-template-columns: 32px auto;
	}
	.activity-header > span.activity-header-symbol {
		width: 32px;
		height: 32px;
	}
}