.image-bottom {
    position: fixed;
    z-index: -1;
    left: 0;
    bottom: 0;
    width: 100%;   
}

.alert {
  padding: 20px;
  background-color: #ff9800;
  color: black;
}

.redalert {
  padding: 20px;
  background-color: #FF0000;
  color: black;
}

.closebtn {
  margin-left: 15px;
  color: white;
  font-weight: bold;
  float: right;
  font-size: 22px;
  line-height: 20px;
  cursor: pointer;
  transition: 0.3s;
}

.closebtn:hover {
  color: black;
}