Number to Roman Converter
/* General Reset */
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
/* Body Styling */
body {
font-family: 'Arial', sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background: linear-gradient(to right, #6a11cb, #2575fc);
color: #fff;
}
/* Container */
.container {
text-align: center;
background: rgba(255, 255, 255, 0.1);
padding: 30px;
border-radius: 15px;
box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
width: 90%;
max-width: 400px;
}
/* Heading */
.container h1 {
font-size: 2rem;
margin-bottom: 20px;
}
/* Converter Input Section */
.converter {
display: flex;
flex-direction: column;
gap: 10px;
margin-bottom: 20px;
}
/* Input Styling */
.converter input {
padding: 10px;
font-size: 1rem;
border: none;
border-radius: 5px;
outline: none;
text-align: center;
}
/* Button Styling */
.converter button {
padding: 10px;
font-size: 1rem;
font-weight: bold;
border: none;
border-radius: 5px;
background-color: #ff7e5f;
color: #fff;
cursor: pointer;
transition: background 0.3s ease-in-out;
}
.converter button:hover {
background-color: #e75134;
}
/* Output Styling */
.output {
font-size: 1.2rem;
font-weight: bold;
background: rgba(255, 255, 255, 0.15);
padding: 15px;
border-radius: 5px;
}
/* Responsive Design */
@media (max-width: 600px) {
.container h1 {
font-size: 1.5rem;
}
.converter input, .converter button {
font-size: 0.9rem;
}
.output {
font-size: 1rem;
}
}
// Number to Roman Converter Logic
function convertToRoman(num) {
const romanNumerals = [
{ value: 1000, numeral: 'M' },
{ value: 900, numeral: 'CM' },
{ value: 500, numeral: 'D' },
{ value: 400, numeral: 'CD' },
{ value: 100, numeral: 'C' },
{ value: 90, numeral: 'XC' },
{ value: 50, numeral: 'L' },
{ value: 40, numeral: 'XL' },
{ value: 10, numeral: 'X' },
{ value: 9, numeral: 'IX' },
{ value: 5, numeral: 'V' },
{ value: 4, numeral: 'IV' },
{ value: 1, numeral: 'I' }
];
let roman = '';
romanNumerals.forEach(({ value, numeral }) => {
while (num >= value) {
roman += numeral;
num -= value;
}
});
return roman;
}
// DOM Manipulation
document.getElementById('convertBtn').addEventListener('click', () => {
const numberInput = document.getElementById('numberInput').value;
const outputElement = document.getElementById('romanOutput');
if (numberInput < 1 || numberInput > 3999 || isNaN(numberInput)) {
outputElement.textContent = "Please enter a number between 1 and 3999.";
outputElement.style.color = "#ff5252";
} else {
const romanNumeral = convertToRoman(parseInt(numberInput));
outputElement.textContent = `Roman Numeral: ${romanNumeral}`;
outputElement.style.color = "#32cd32";
}
});
