Placeholder for two lines

HTML

<textarea  maxlength="25000" style="margin-bottom: 0px; height: 70px; width: 99%;" placeholder="Start Typing here..." ></textarea>

CSS

textarea::-webkit-input-placeholder{
		text-align:center;
		font-size:34px;
		line-height:35px;
	}
	
	textarea:-ms-input-placeholder{
		text-align:center;
		font-size:34px;
		line-height:35px;
	}
	textarea::-webkit-input-placeholder::after{
		display: block;
		text-align:center;
		content:"For example, when you last spoke to your customer";
		font-size:20px;
		line-height:20px;
	}
    
	textarea:-ms-input-placeholder::after{
		display: block;
		text-align:center;
		content:"For example, when you last spoke to your customer";
		font-size:30px;
		line-height:20px;
	}