修改表单元素的光标颜色，用
caret-color
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="css/demo.css">
<style>
.demo {
caret-color: red;
}
</style>
</head>
<body>
<input type="text" class="demo">
</body>
</html>
image.png
