Cut Tweetdeck columns in half and remove scroll bars.

userContent.css

@-moz-document domain(tweetdeck.twitter.com) {
	.app-columns {
		display: flex;
		flex-flow: row wrap;
	}

	.column {
		flex: 1 20% !important;
		height:50% !important;
	}

	.column-header {
		height: 30px !important;
		line-height: 30px !important;

	}

	.column-title {
		font-size: 1em !important;
	}

	.js-column-scroller {
		width: 105%!important;
	}

	.column-content {
		top: 30px !important;
	}

	.icon-sliders {
		font-size: 18px !important;
	}

	.column-settings-link {
		margin-top: -4px
	}
}