.ktk{
    background-color: white;
    min-height: 1200px;
    width: auto;
    margin: 10x 10px;
    padding: 30px;
}
.ktk .ex{
    width: 500px;
    background-color: #111;
    border: 2px solid #00ff00;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 0 20px #00ff00;
    font-family: 'Courier New', monospace;
    min-height: 300px;
    text-align: center;

}
.ktk .ex .gmbr{
    
}