dialog.css

#dialog {
  position: fixed;
  left: 50%;
  top: 150px;
  max-width: 600px;
  min-width: 250px;
  border: 1px solid #eee;
  background: white;
  z-index: 1000;
}

#dialog .content {
  padding: 15px 20px;
}

#dialog h1 {
  margin: 0 0 5px 0;
  font-size: 16px;
  font-weight: normal;
}

#dialog p {
  margin: 0;
  padding: 0;
  font-size: .9em;
}

/* close */

#dialog .close {
  position: absolute;
  top: 3px;
  right: 10px;
  text-decoration: none;
  color: #888;
  font-size: 16px;
  font-weight: bold;
  display: none;
}

#dialog .close em {
  display: none;
}

#dialog.closable .close {
  display: block;
}

#dialog .close:hover {
  color: black;
}

#dialog .close:active {
  margin-top: 1px;
}

/* slide */

#dialog.slide {
  -webkit-transition: opacity 300ms, top 300ms;
  -moz-transition: opacity 300ms, top 300ms;
}

#dialog.slide.hide {
  opacity: 0;
  top: -500px;
}

/* fade */

#dialog.fade {
  -webkit-transition: opacity 300ms;
  -moz-transition: opacity 300ms;
}

#dialog.fade.hide {
  opacity: 0;
}

/* scale */

#dialog.scale {
  -webkit-transition: -webkit-transform 300ms;
  -moz-transition: -moz-transform 300ms;
  -webkit-transform: scale(1);
  -moz-transform: scale(1);
}

#dialog.scale.hide {
  -webkit-transform: scale(0);
  -moz-transform: scale(0);
}