Check out example codes for "pure css heart". It will help you in understanding the concepts better.

Code Example 1

.heart {
	width: 36px;
	height: 36px;
	position: relative;
	margin: 1em auto;
	transform-origin: 50% 50%;
	transform: rotate(45deg) scale(1);
	&:before {
		content: "";
		position: absolute;
		display: block;
		border-top-left-radius: 12px;
		border-bottom-left-radius: 12px;
		background-color: tomato;
		width: inherit;
		height: 24px;
		top: 12px;
		left: 0;
	}
	&:after {
		content: "";
		position: absolute;
		display: block;
		background-color: tomato;
		width: 24px;
		top: 0;
		left: 12px;
		height: inherit;
		border-top-left-radius: 12px;
		border-top-right-radius: 12px;
	}
}

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