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<!DOCTYPE html>
<html>
<head>
<style> 
input:checked {
  height: 50px;
  width: 50px;
}
</style>
</head>
<body>
<form action="">
  <input type="radio" checked="checked" value="male" name="gender"> Male<br>
  <input type="radio" value="female" name="gender"> Female<br>
  <input type="checkbox" checked="checked" value="Bike"> I have a bike<br>
  <input type="checkbox" value="Car"> I have a car 
</form>
</body>
</html>