#calculator {
    font-family: Arial, Helvetica, sans-serif;
    background-color: rgb(22, 22, 22);
    overflow: hidden;
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    margin: auto;
}

.dis {
    background-color: black;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#display {
    width: 100%;
    padding: 20px;
    font-size: clamp(1.5rem, 8vw, 3rem);
    text-align: right;
    border: none;
    background-color: rgb(29, 53, 29);
    box-sizing: border-box;
}

#keys {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 20px;
}

button {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    border: none;
    background-color: black;
    color: white;
    font-size: clamp(1rem, 5vw, 2rem);
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background-color: rgba(0, 0, 0, 0.459);
}

.op {
    background-color: blue;
}

.op:hover {
    background-color: rgba(0, 0, 255, 0.692);
}

.calc {
    background-color: green;
}

.calc:hover {
    background-color: rgba(0, 128, 0, 0.575);
}

.reset {
    background-color: red;
}

.reset:hover {
    background-color: rgba(255, 0, 0, 0.61);
}

body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 10px;
    box-sizing: border-box;
}