.alertable-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 1050;
  display: none;
}

.alertable {
  background: white;
  padding: 1em 1.5em;
  border-radius: 4px;
  max-width: 400px;
  width: 90%;
  box-sizing: border-box;
  box-shadow: 0 5px 15px rgba(0,0,0,.5);
  font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: none;
  z-index: 1051;
}

.alertable-message {
  margin-bottom: 1em;
  font-size: 1em;
  color: #333;
}

.alertable-buttons {
  text-align: right;
}

.alertable-ok,
.alertable-cancel {
  background: #1a73e8;
  color: white;
  border: none;
  border-radius: 3px;
  padding: 0.5em 1em;
  font-size: 1em;
  cursor: pointer;
  margin-left: 0.5em;
}

.alertable-ok:hover,
.alertable-cancel:hover {
  background: #155cbf;
}