body{
    background-color: pink;
}
.kutu1{
    margin-top: 20px;
    margin-right: auto;
    margin-bottom: 0px;
    margin-left: auto;

    margin: 20px auto 0px auto; /* Üst Sağ Alt Sol */

    margin: 20px auto; /* Üst ve Alt 20px Sağ ve Sol auto */

    background-color: purple;

    width: 800px;
    height: 100px;

    color:greenyellow;
    font-size: 40px;
    font-style: italic;
    font-weight: bold;
    font-family: Algerian;

    text-align: center;
    line-height: 100px;
}