.how-to-use li {
    padding: 1.5px;
    margin: 1px;
}
/* STRUCTURE */

.wrapper {
	padding: 5px;
	max-width: 960px;
	width: 100%;
	margin: 20px auto;
}

.columns-0 {
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
	margin: 5px 0;
}

.column-0 {
	flex: 1;
	border: 1px solid gray;
	margin: 2px;
	padding: 10px;
	&:first-child { margin-left: 0; }
	&:last-child { margin-right: 0; }
	
}

.column-0 h2 {
    padding-bottom: 2px;
}


@media screen and (max-width: 980px) {
  .columns-0 .column-0 {
		margin-bottom: 5px;
    flex-basis: 40%;
		&:nth-last-child(2) {
            flex-basis: 100%;
			margin-right: 0;
		}
		&:last-child {
			flex-basis: 100%;
			margin: 0;
		}
	}
}

@media screen and (max-width: 680px) {
	.columns-0 .column-0 {
		flex-basis: 100%;
		margin: 0 0 5px 0;
	}
}