.ol-ext-dialog {
  position: fixed;
  top: -100%;
  left: 0;
  width: 150%;
  height: 100%;
  opacity: 0;
  background-color: rgba(0,0,0,.5);
  z-index: 1000;
  pointer-events: none;
  transition: opacity .2s, top 0s .2s;
}
.ol-ext-dialog.ol-visible {
  opacity: 1;
  top: 0;
  pointer-events: auto;
  transition: opacity .2s, top 0s;
}

.ol-viewport .ol-ext-dialog {
  position: absolute;
}
.ol-ext-dialog h2 {
  margin: 0 .5em .5em 0;
  display: none;
}
.ol-ext-dialog > form.ol-title h2 {
  display: block;;
}
.ol-ext-dialog > form {
  position: absolute;
  top: 0;
  left: 33.33%;
  min-width: 5em;
  max-width: 60%;
  min-height: 3em;
  max-height: 100%;
  background-color: #fff;
  border: 1px solid #333;
  box-shadow: 3px 3px 4px rgba(0,0,0, 0.5);
  transform: translate(-50%, -30%);
  transition: top .2s, transform .2s;
  padding: 1em;
  box-sizing: border-box;
  overflow-x: hidden;
  overflow-y: auto;
}
.ol-ext-dialog > form.ol-closebox {
  padding-top: 1.5em;
}
.ol-ext-dialog > form.ol-title {
  padding-top: 1em;
}
.ol-ext-dialog > form.ol-button {
  padding-bottom: .5em;
}

.ol-ext-dialog.ol-zoom > form {
  top: 30%;
  transform: translate(-30%, -50%) scale(0);
}
.ol-ext-dialog.ol-visible > form {
  top: 30%;
}
.ol-ext-dialog.ol-zoom.ol-visible > form {
  transform: translate(-30%, -50%) scale(1);
}

.ol-ext-dialog > form .ol-content {
  overflow-x: hidden;
}

.ol-ext-dialog > form .ol-closebox {
  position: absolute;
  top: .5em;
  right: .5em;
  width: 1em;
  height: 1em;
  cursor: pointer;
  display: none;
}
.ol-ext-dialog > form.ol-closebox .ol-closebox {
  display: block;
}
.ol-ext-dialog > form .ol-closebox:before,
.ol-ext-dialog > form .ol-closebox:after {
  content: "";
  position: absolute;
  background-color: currentColor;
  top: 50%;
  left: 50%;
  width: 1em;
  height: .1em;
  border-radius: .1em;
  transform: translate(-50%, -50%) rotate(45deg);
}
.ol-ext-dialog > form .ol-closebox:before {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.ol-ext-dialog > form .ol-buttons {
  text-align: right;
}
.ol-ext-dialog > form .ol-buttons input {
  margin-top: .5em;
  padding: .5em;
  background: none;
  border: 0;
  font-size: 1em;
  color: rgba(0,60,136,1);
  cursor: pointer;
}
.ol-ext-dialog > form .ol-buttons input:hover {
  background-color:  rgba(0,60,136,.1);
}
.ol-ext-dialog > form .ol-buttons input[type=submit] {
  font-weight: bold;
}