body {
    background-color: #000000;
  }

#logo-centro{
    background-image: url(../img/poweredby.png);
    background-repeat: no-repeat;
    background-attachment: scroll;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 800px;
    position: relative;
}