Flip City Wiki:Flex columns/styles.css

/* {{pp-template}} */
.flex-columns-container {
	clear: both;
	width: 100%;
	display: flex;
	flex-wrap: wrap;
}

.flex-columns-container > .flex-columns-column {
	float: left;
	width: 50%;
	min-width: 360px;
	padding: 0 0.5em;
	box-sizing: border-box;
	flex: 1;
	display: flex;
	flex-direction: column;
}

@media screen and (max-width: 393px) {
	.flex-columns-container > .flex-columns-column {
		min-width: 0;
	}
}

.flex-columns-container > .flex-columns-column:first-child {
	padding-left: 0;
}

.flex-columns-container > .flex-columns-column:last-child {
	padding-right: 0;
}

@media screen and (max-width: 720px) {
	.flex-columns-container > .flex-columns-column {
		padding: 0;
		width: 100%;
	}
	
	.flex-columns-container {
		display: block;
	}
}

.flex-columns-container > .flex-columns-column > div {
	flex: 1 0 auto;
}

.flex-columns-container > .flex-columns-column > div.flex-columns-noflex {
	flex: 0;
}