* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.container {
    width: 100%;
    height: 100vh;
    background: #A499B3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calculator {
    padding: 20px;
    background: #1b1725;
    border-radius: 10px;
    box-shadow: 0 5px 25px 20px rgba(83, 75, 98, 0.3);
    border: 2px solid #ccc;

}

.calculator .btn {
    width: 60px;
    height: 60px;
    background: #1b1725;
    color: #f1f1f1;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.1), 5px 5px 15px rgba(255, 255, 255, 0.1);
    font-size: 20px;
    text-align: center;
    outline: none;
    border: 1px solid #ccc;
    border-radius: 5px;
    cursor: pointer;
    margin: 10px;
    transition: 0.2s;
}




.calculator .display {
    display: flex;
    justify-content: center;
    align-items: end;
    margin: 20px 10px;
    border-bottom: 2px solid #ccc;

}

.calculator .display input {
    font-size: 24px;
    width: inherit;
    padding: 20px 0;
    text-align: right;
    flex: 1;
    background: transparent;
    color: #fff;
    outline: none;
    border: none;
    border-radius: 5px;
}

.btn:hover {
    background: #534b62;
    color: #ccc;
}

.btn.blue {
    background: #226CE0;
}

.btn.blue:hover {
    background: #0052d6;
    color: #ccc;
}

.btn.equal {
    width: 145px;
}