etherpad-lite/src/static/css/pad/popup.css

.popup {
  font-size: 12px;
  width: 80%;
  max-width: 500px;
  padding: 10px;
  border-radius: 0 0 6px 6px;
  border: 1px solid #ccc;
  border-top: none;
  background: #f7f7f7;
  background: -webkit-linear-gradient(#F7F7F7, #EEE);
  background: -moz-linear-gradient(#F7F7F7, #EEE);
  background: -ms-linear-gradient(#F7F7F7, #EEE);
  background: -o-linear-gradient(#F7F7F7, #EEE);
  background: linear-gradient(#F7F7F7, #EEE);
  -webkit-box-shadow: 0 0 8px #888;
  -moz-box-shadow: 0 0 8px #888;
  box-shadow: 0 2px 4px #ddd;
  color: #222;
}
.popup input[type=text] {
  width: 100%;
  padding: 5px;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  display: block;
  margin-top: 10px;
}
.popup input[type=text], #users input[type=text] {
  outline: none;
}
.popup button {
  padding: 5px;
  font-size: 14px;
}
.popup a {
  text-decoration: none
}
.popup h1 {
  color: #555;
  font-size: 18px
}
.popup h2 {
  color: #777;
  font-size: 15px
}
.popup p {
  margin: 5px 0
}
.popup select {
  background: #fff;
  padding: 2px;
  height: 24px;
  border-radius: 3px;
  border: 1px solid #ccc;
  outline: none;
  width: 120px;
}
#settings,
#import_export,
#embed,
#connectivity,
#users {
  position: absolute;
  top: 38px;
  right: 20px;
  display: none;
  z-index: 500;
}

@media all and (max-width: 400px){
  .popup {
    width:100%;
    max-width:300px;
    top: 72px !important;
  }
}

/* Mobile devices */
@media only screen and (max-width: 720px) {
  #users {
    top: auto;
    right:0px !important;
    bottom: 33px;
    border-radius: 0px !important;
    height: 55px !important;
    overflow: auto;
  }
  #mycolorpicker {
    left: 0px;
    top:37px !important;
    position:fixed;
  }
  .popup {
    -webkit-border-radius: 0;
    -moz-border-radius: 0;
    border-radius: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;
    width: 100%;
  }
  #settings,
  #import_export,
  #connectivity,
  #embed {
    top:auto;
    left: 0;
    bottom: 33px;
    right: 0;
  }
}