html程式碼:
 

<div id="preloader_3"></div>

css程式碼:

#preloader_3 {
	position: relative;
}

#preloader_3:before {
	width: 20px;
	height: 20px;
	border-radius: 20px;
	background: blue;
	content: '';
	position: absolute;
	background: #9b59b6;
	animation: preloader_3_before 1.5s infinite ease-in-out;
}

#preloader_3:after {
	width: 20px;
	height: 20px;
	border-radius: 20px;
	background: blue;
	content: '';
	position: absolute;
	background: #2ecc71;
	left: 22px;
	animation: preloader_3_after 1.5s infinite ease-in-out;
}

@keyframes preloader_3_before {
	0% {
		transform: translateX(0px) rotate(0deg)
	}
	50% {
		transform: translateX(50px) scale(1.2) rotate(260deg);
		background: #2ecc71;
		border-radius: 0px;
	}
	100% {
		transform: translateX(0px) rotate(0deg)
	}
}

@keyframes preloader_3_after {
	0% {
		transform: translateX(0px)
	}
	50% {
		transform: translateX(-50px) scale(1.2) rotate(-260deg);
		background: #9b59b6;
		border-radius: 0px;
	}
	100% {
		transform: translateX(0px)
	}
}