* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }

        body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: linear-gradient(135deg, #0b0b0b, #0b0b0b);
        }

        .calculator {
            background: rgba(48, 141, 124, 0.1);
            backdrop-filter: blur(10px);
            padding: 20px;
            border-radius: 20px;
            box-shadow: 0 8px 32px rgb(192, 185, 185);
            width: 320px;
        }

        .display {
            width: 100%;
            height: 80px;
            background: rgba(238, 235, 235, 0.2);
            border-radius: 10px;
            margin-bottom: 20px;
            padding: 20px;
            font-size: 2em;
            color: #fff;
            text-align: right;
            border: none;
            outline: none;
        }

        .buttons {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
        }

        button {
            padding: 20px;
            font-size: 1.2em;
            border: none;
            border-radius: 10px;
            background: rgba(214, 205, 205, 0.2);
            color: #fff;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        button:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: scale(1.05);
        }

        .operator {
            background: #930b4f;
        }

        .operator:hover {
            background: #ff8787;
        }

        .equals {
            background: #050102;
        }

        .equals:hover {
            background: #4a014c;
        }

        .clear {
            background: #b55057;
        }

        .clear:hover {
            background: #711a27;
        }