:in-range 예제
<style>
input:in-range {border: 2px solid green; color:green}
input:out-of-range {border: 2px solid red; color:red;}
</style>
범위 안 : <input type="number" min="10" max="20" value="15"><br>
범위 밖 : <input type="number" min="10" max="20" value="30">
결과보기