html, body {
  width: 100%;
  height: 100%
}

.icon-access-time {
  float: left;
  margin: 1px 2px 0 3px;
  opacity: 0.7;
  font-size: 12px;
}

.icon-keyboard-arrow-down, .icon-clear{
  color: #ffffff;
  background: #bbbbbb;
  font-size: 22px;
  font-weight: 500;
  padding: 5px 4px 5px 4px;
  width: 25px;
  cursor: pointer;
}
.icon-keyboard-arrow-down{
  position: absolute;
  box-shadow: 0 -1px 1px rgba(5, 5, 5, 0.3);
}
.icon-clear{
  position: relative;
}

.parent {
  width: 100%;
  height: 100%;
  outline: 1px solid black;

  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flex;
  display: -o-flex;
  display: flex;
  flex-flow: column nowrap;
}

#root {
  position: relative;
  height: 100%;
}

#usermenu {
  margin: 10px; text-align: center;
  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flex;
  display: -o-flex;
  display: flex;
  flex-flow: row nowrap;
}

#usermenu>a {
  flex: 50px 1 1;
  align-self: flex-start;
  text-align: center;
  color: #fff;
  background-color: darkslategray;
  outline: 2px solid papayawhip;
  padding: 5px;
  text-decoration: none;
}
#usermenu>a:hover {
  background-color: darkolivegreen;
}

html, body {
  width: 100%;
  height: 100%
}

.parent {
  width: 100%;
  height: 100%;
  outline: 1px solid black;

  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flex;
  display: -o-flex;
  display: flex;
  flex-flow: column nowrap;
}

#root {
  position: relative;
  height: 100%;
}

#usermenu {
  margin: 10px; text-align: center;
  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flex;
  display: -o-flex;
  display: flex;
  flex-flow: row nowrap;
}

#usermenu>a {
  flex: 50px 1 1;
  align-self: flex-start;
  text-align: center;
  color: #fff;
  background-color: darkslategray;
  outline: 2px solid papayawhip;
  padding: 5px;
  text-decoration: none;
}
#usermenu>a:hover {
  background-color: darkolivegreen;
}

Remove unused styles from xmpp example
Remove unused styles from xmpp example
