*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    width: fit-content;
    position: relative;
    display: flex;
    justify-self: center;
    top: 7vh;
    background-color: rgb(1, 66, 66);
}

.cal{
    background-color:darkcyan;
    border-radius: 2vh;    
    padding: 2vh;
    box-shadow: 1.5vh 1.5vh 2vh cyan;
}

.cal form input{
    border: 0;
    outline: 0;
    width: 7vh;
    height: 7vh;
    border-radius: 1vh;
    box-shadow: -1vh -1vh 2vh rgb(255, 255, 255, 0.1), 1vh 1vh 2vh rgb(255, 255, 255, 0.1) ;
    background: transparent;
    font-size: 3vh;
    color: whitesmoke;
    margin: 3vh;
}

form .display{
    display: flex;
    justify-content: flex-end;
    margin: 2vh 0;
}

form .display input{
    text-align: right;
    flex: 1;
    box-shadow: none;
    font-size: 6vh;
}

form input.equal{
    width: 20vh;
}

form input.opp{
    color:cyan ;
}