.ustmenu {
  position: relative;
}

.kayan-duyuru-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 10;
  background-color: #0013d3;
}

.kayan-duyuru {
  position: absolute;
  width: 100%;
  height: 100%;
  text-align: center;
  line-height: 40px;
  font-weight: bold;
  opacity: 0;
  transition: opacity 0.5s ease;
  color: #fff;
  font-size: 20px;
  
}

.kayan-duyuru.active {
  opacity: 10;
}