.naglowek
{
    text-align: center;
    font-size: 20px;
}

.center
{
    width: 1000px;
    margin-left: auto;
    margin-right: auto;
}
.przycisk
{
    margin-left: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
    text-align: center;
    width: 300px;
    font-size: 13px;
}
.dotted
{
    border-top: dotted 1px;
}