style.css

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


.container{
    width: 100%;
    height: 100vh;
    background-image: url(background.avif);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}
.calculator{
    background: #3a4452;
    padding: 20px;
    border-radius: 10px;
}
.calculator form input{
    border: 0;
    outline: 0;
    width: 60px;
    height: 60px;
    border-radius: 10px;
    box-shadow: -8px -8px -15px rgba(255, 255, 255, 0.1),5px 5px 15px rgba(0, 0, 0, 0.2);;
    background: transparent;
    font-size: 20px;
    color: #fff;
    cursor: pointer;
    margin: 10px;    
}

form .display{
    display: flex;
    justify-content: flex-end;
    margin: 20px 0;
}
form .display input{
    text-align: right;
    flex: 1;
    font-size: 45px;
    box-shadow: none;
}
form input.equal{
    width: 145px;
}



form input.operator{
    color: #33ffd8;
}

.text{
    background: transparent;
    font-size: 25px;
    position: relative;
    right:  27%;
    top: -47%;
    
}