.custom-btn {
  background-color: #3498db;
  color: white;
  padding: 10px 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.custom-btn:hover {
  background-color: #2980b9;
}

.modal-overlay {
  display: none;
  position: fixed;
  z-index: 999;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-box {
  background: #fff;
  padding: 2em;
  border-radius: 8px;
  text-align: center;
  max-width: 400px;
  min-height: 180px; /* ADD THIS */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.close-btn {
  position: absolute;
  right: 10px;
  top: 10px;
  font-size: 20px;
  cursor: pointer;
}

.form-group {
  /*margin-bottom: 1em;*/
  text-align: left;
}
input[type="text"], input[type="email"] {
  width: 100%;
  padding: 0.5em;
  box-sizing: border-box;
}