html{
    background: cadetblue;
}

.button{
    padding: 20px;
    margin: 0 3px;
    border: 2px solid black;
    border-radius: 10px;
    cursor: pointer;
    width: 65px;
    background: aqua;
}

.text-center{
    text-align: center;
}

.mx-auto{
    margin: auto;
}

.flex{
    display: flex;
}

.flex-col{
    flex-direction: column;
}

.items-center{
    align-items: center;
}

.row{
    margin: 8px 0;
}

.row input{
    margin: 0;
    padding: 15px 0;
    border: 2px solid black;
    border-radius: 7px;
    font-size: 25px;
    width: 290px;
    background: antiquewhite;
}