:root {
  --black: #151515;
  --gray100: #ddd;
  --blue: #92D6E4;
  --chat-tail-size: 21px;
}


.u-btn {
  all: unset;
  cursor: pointer;
}

.chatbox {
  box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.25);
  bottom: 0;
  position: fixed;
  right: 1em;
  transform: translatey(23.5em);
  transition: all 300ms ease;
  width: 18.5em;
  z-index: 100;
}
.chatbox--is-visible {
  transform: translatey(0);
}
.chatbox__header {
  background: #66afcc;
  border-top-right-radius: 0.5em;
  border-top-left-radius: 0.5em;
  display: flex;
  justify-content: space-between;
  padding: 0 0.75em;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}
.chatbox__header-cta-text {
  color: #fff;
  font-weight: 300;
  font-size: 1.0rem;
  margin-top: 10px ;
}
.chatbox__header-cta-icon {
  color: #fff;
  margin-right: 0.75em;
}
.chatbox__header-cta-btn {
  background: none;
  border: none;
  color: #ffffff;
  padding: 0.5em;
  transition: all 300ms ease;
}
.chatbox__header-cta-btn:hover {
  color: #fff;
}
.chatbox__display {
  background: #ffffff;
  height: 20em;
  overflow: auto;
  padding: 0.75em;
}
.chatbox__display-chat {
  background: #fff;
  border-radius: 0.5em;
  color: #666;
  font-weight: 300;
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 0.75em;
  text-align: justify;
}
.chatbox__form {
  display: flex;
  background-color: whitesmoke;
}
.chatbox__form-input {
  border: none;
  color: #222;
  font-size: 0.9rem;
  font-weight: 300;
  padding: 1.25em 1em;
  width: 100%;
}
.chatbox__form-input:required {
  box-shadow: none;
}
.chatbox__form-submit {
  background: none;
  border: none;
  color: #aaa;
  padding: 1em;
}