.giris-ekrani {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color:#474747;
    color: white;
    text-align: center;
    padding: 20px;
    border-radius: 0;
    animation: fadeInOut 1.5s ease-in-out forwards;
    z-index: 1000000000;
  }
  
  @keyframes fadeInOut {
    0%,90% {
      opacity: 1;
    }
    100% {
      opacity: 0;

    }

  }
  
  @media (max-width: 600px) {
    .giris-ekrani {
      padding: 10px;
    }
  }