.app_pop_up {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.app_pop_up img {
  width: 100%;
  height: auto;
}

.app_pop_up .btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  background-color: #555;
  color: white;
  font-size: 16px;
  padding: 12px 24px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  text-align: center;
}

.app_pop_up .btn:hover {
  background-color: black;
}
.modal-title {
    text-align: center;
    font-size: 16px;
    margin-bottom: 20px;
    border-bottom: 1px solid #e4e9f2;
    font-weight: 600;
}