如圖：
代碼：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.heart {
position: relative;
margin: 50px auto;
width: 120px;
}
.heart::after,
.heart::before {
content: "";
width: 70px;
height: 115px;
position: absolute;
background: red;
left: 70px;
top: 0;
border-radius: 50px 50px 0 0;
transform: rotate(-45deg);
transform-origin: 0 100%;
}
.heart::after {
left: 0;
transform-origin: 100% 100%;
transform: rotate(45deg);
}
</style>
</head>
<body>
<div class="heart"></div>
</body>
</html>