* {
			margin: 0;
			padding: 0;
		}

		div {
			width: 100px;
			height: 100px;
			background: #eee;
			animation: myfirst 5s;
			animation-fill-mode: forwards;
		}

		@keyframes myfirst {
			0% {
				background: red;
			}

			50% {
				background: green;
			}

			100% {
				background: yellow;
			}
		}