How to hide CSS as added extra?

There are added CSS lines which I like to move to the existing CSS. It this possible and how to do it?

Need help.

<style>
	
	.nextpostslink {
		float: right!important;
		display: inline-block;
		padding: 1.3rem 2rem;
		background-color: #0060AD;
		color: #FFF !important;
		border-color: #0060AD;    
		margin-right: 0.5rem;
	}
		.previouspostslink {
		color: #FFF !important;
		padding: 1.3rem 2rem;
	}

	.page {
		border: 1px solid;
		padding: 10px 15px 10px 16px;
		display: inline-block;
		color: #fff;
	}
	.current{
		border: 1px solid;
		padding: 12px 16px 11px 19px;
		display: inline-block;
		background: #0060AD;
		color: #fff;
		margin: 0 10px 0 10px;;
	}
</style>