@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@300&display=swap');
*{
    background-color: azure;
    font-family: 'Nunito', sans-serif;

}

header{
    font-size: 2rem;
    display: flex;
    background-color: gray;
    height: 70px;
    justify-content: center;
    align-items: center;
    
}

main{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#num{
    height: 2rem;
    width: 6rem;
}

.box{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 3px solid gray;
    width: 50vw;
    padding: 1.5rem 0 1.5rem 0;
    gap: 1rem;
    height: auto;
    margin-top: 2.5rem;
    border-radius: 10px;
}


.Oper-button{
    background-color: gray;
    width: 3rem;
    height: 2rem;
    font-size: 20px;
}
.Oper-button:hover{
    background-color: azure;
}

#result{
    font-size: 20px;
    display: flex;
    gap: 5px;
}