section
{
    padding: 100px!important;
}

.card
{
    background-color: #007bff;
    margin: 15px!important;
}

.card-header
{
    color: white!important;
    font-weight: bold!important;
}

.card-body
{
    color: white!important;
}

.card > a:hover
{
    text-decoration: none;
}

.card:hover
{
    background-color: #0064dc;
}

.card-selected, .card:active
{
    background-color: #003264;
}

.tip-hacker
{
    background-image: url("hacker_bg.gif") !important;
}

.tip-hacker-bgColor
{
    background-color: black !important;
}