.qimo-chat-btn {
  position: fixed;
  bottom: 120px;
  width: 36px;
  text-align: center;
  display: none;
}
.qimo-chat-btn button {
  padding: 10px;
  word-wrap: break-word;
}

.message-base {
    background-color: #fff;
    padding: 50px;
    margin-top: 30px;
}

.nav > li > a.tab {
    font-size: 16px;
    padding: 20px 40px;
}