<!DOCTYPE html>
<style>
body { overflow:hidden; } /* Prevent an additional layout pass, which could hide bugs. */
.radial::before { width:150px; height:150px; border:2px solid black;
	content: radial-gradient(circle at 45px 45px, #A7D30C, #019F62 40px, rgba(1,159,98,0) 50px);
	display: block;
}
.linear::after { width:130px; height:130px; border:2px solid black; 
	content: linear-gradient(to bottom, #00abeb, #fff 50%, #66cc00 50%, #fff);
	display: block;
}
</style>
<div class="radial"></div>
<div class="linear"></div>