SOURCE

<span class="nh neonO">重</span>
<span class="nh neonY">金</span>
<span class="nh neonP">霸</span>
<span class="nh neonR">屏</span>

.nh {
	font-size: 100px;
	color: #fff;
}

.neonO {
	animation: neonO 0.5s ease-in-out infinite alternate;
}

.neonY {
	animation: neonY 0.5s ease-in-out infinite alternate;
}

.neonP {
	animation: neonP 0.5s ease-in-out infinite alternate;
}

.neonR {
	animation: neonR 0.5s ease-in-out infinite alternate;
}

@-webkit-keyframes neonR {
	from {
		text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
	}
	to {
		text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
	}
}

@-webkit-keyframes neonY {
	from {
		text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
	}
	to {
		text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
	}
}

@-webkit-keyframes neonb {
	from {
		text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
	}
	to {
		text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
	}
}

@-webkit-keyframes neonO {
	from {
		text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
	}
	to {
		text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
	}
}

@-webkit-keyframes neonP {
	from {
		text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
	}
	to {
		text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
	}
}