html,body{
        width: 100%;
        height: 100%;
        box-sizing: border-box;
    }
    .calculator{
        width: 300px;
        height: 500px;
        background-color: rgba(0, 0, 0, 0.922);
        border-radius: 10px;
        margin: auto;
        display: flex;
        position: relative;
        top: 100px;
        justify-content: center;
        align-items: center;
        flex-direction: column;


    }
    .calculator div{
            
            display: flex;


    }
    .input-box input{
        outline: none;
        padding: 30px;
        margin-bottom: 30px;
        font-weight: 800;
    }
    button{
        width: 50px;
        height: 50px;
        border-radius: 50%;
        border: none;
        margin: 5px;
        font-size: 20px;
        font-weight: 700;
                    color: white;

    }
    button:focus{
    border: 1px solid white;
    }
    .clr{
        background-color: #ff9f0a;
    }
    .g-clr{
        background-color: #5c5c5f;
    }
    .calculator div :not(.g-clr , .clr ,input ){
        background-color: #2a2a2c;
    }
    input::placeholder{
        font-size: 20px;
        width: 300px;
    }