#scrolly {
			position: relative;
		}

		article {
			position: relative;
			padding: 0 1rem;
			margin: 0 auto;
			width: 33%;
		}

		.step {
			margin: 2rem auto 4rem auto;
			background-color: #3b3b3b;
			color: #fff;
            transition:all .5s;
            height: 500px;
		}

		.step.is-active {
			background-color: blue;
			color: white;
		}

		.step p {
			text-align: center;
			padding: 1rem;
			font-size: 1.5rem;
		}