* { box-sizing: border-box; }



/* STRUCTURE */

.wrapper {
	padding: 5px;
	max-width: 960px;
	width: 95%;
	margin: 10px auto;
}


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

.column3 {
	flex: 1;
	
	margin: 2px;
	padding: 10px;
	max-width: 300px;
	background-color: #fff;
	height:400px;
	&:first-child { margin-left: 0; }
	&:last-child { margin-right: 0; }
	
}


@media screen and (max-width: 980px) {
  .columns .column3 {
		margin-bottom: 5px;
    flex-basis: 40%;
		&:nth-last-child(2) {
			margin-right: 0;
		}
		&:last-child {
			flex-basis: 100%;
			margin: 0;
		}

@media screen and (max-width: 680px) {
	.columns .column3 {
		flex-basis: 100%;
		margin: 0 0 5px 0;
	}
}