body{
        background-color: #130C16;
        color: #130C16;
        }
    #header{
        background-color: #0F52B9;
        }
    .card-header{
        background-color: #0F52B9;
        }
    .card-body{
        background-color: #00A5FF;
        }
    #navbar{
        background-color: #00A5FF;
        }
    #táblázat{
        text-align: center;
        }
    #gomb{
        color: #130C16;
        }