DOCTYPE html>html lang="en">head> meta charset="UTF-8"> title>자바스크립트 계산기title> style> input, select{ outline: none; border: none; width: 50px; height: 25px; border-radius: 5px; background-color: rgb(205, 215, 247); color: rgb(34, 67, 167); font-weight: bold; font-size: 16px; ..
