.esp-chat>.inner{
  position:relative;
}
.esp-chat .dialog-area{
  height: calc(100% - 3rem);
  padding: 15px;
  overflow-y: scroll;
}
.esp-chat .input-area{
  position:absolute;
  height:3rem;
  bottom:0;
  left:0;
  right:0;
  border-top:gray 1px solid;
}
.esp-chat .voice {
  position: relative;
  padding: 20px;
  margin:10px;
  width: fit-content;
  max-width: 80%;
  border-radius: 10px;
  font-size: 0.9rem;
}

.esp-chat .voice:before {
  content: '';
  position: absolute;
  display: block;
  width: 0;
  height: 0;
}

.esp-chat .voice.left {
  background-color:lemonchiffon;
  margin-left: 0;
  margin-right: atuo;
}

.esp-chat .voice.left:before {
  left: -15px;
  top: 20px;
  border-right: 15px solid lemonchiffon;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}

.esp-chat .voice.right {
  background-color:lightgreen;
  margin-left: auto;
  margin-right: 0;
}

.esp-chat .voice.right:before {
  right: -15px;
  top: 20px;
  border-left: 15px solid lightgreen;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}

.esp-chat .voice .text {
  white-space: pre-line;
  word-break: break-all;
}
.esp-chat .voice .option {
  margin:10px 0 0 20px;
}
.esp-chat .voice .option:before {
  font-family:"Font Awesome 5 Free","Font Awesome 5 Brands";
  content: '\f0a4';
  margin-right: 6px;
}
.esp-chat .voice .clickable:hover {
  font-weight:bold;
}