Simple Calculator
body {
font-family: Arial, sans-serif;
text-align: center;
}
#calculator {
width: 300px;
margin: 50px auto;
padding: 20px;
border: 1px solid #ccc;
border-radius: 5px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
input {
width: 100%;
margin-bottom: 10px;
padding: 10px;
box-sizing: border-box;
}
button {
width: 48%;
padding: 10px;
box-sizing: border-box;
cursor: pointer;
}
button.operator {
width: 100%;
}
function appendToDisplay(value) {
document.getElementById('display').value += value;
}
function clearDisplay() {
document.getElementById('display').value = '';
}
function calculateResult() {
try {
document.getElementById('display').value = eval(document.getElementById('display').value);
} catch (error) {
document.getElementById('display').value = 'Error';
}
}