.chat-a {
  display: block;
  padding: 15px;
  border-radius: 5px;
  width: 45%;
  text-align: left;
  clear: both;
  cursor: default;
  overflow-wrap: break-word;
  white-space:inherit;
}
.chat-b {
  display: block;
  padding: 15px;
  border-radius: 5px;
  float: right;
  width: 45%;
  text-align: left;
  clear: both;
  cursor: default;
  overflow-wrap: break-word;
  white-space:inherit;
}
.chat-b-normal {
  font-weight: normal !important;
}
.space {
  clear: both;
  display: block;
  margin-bottom: 10px;
}