<span class="chat">
  Message 😀
</span>

@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

* {
  font-family: roboto;
}

body {
  margin: 0;
  padding: 0;
  background: #339999;
}

.chat {
  margin: 0;
  padding: 10.1px;
  background: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(5);
  border-radius: 0 5px 5px 5px;
}

.chat::before {
  content: '';
  position: absolute;
  top: 0;
  left: -13px;
  width: 0;
	height: 0;
	border-top: 10px solid transparent;
	border-right: 13px solid #fff;
	border-bottom: 10px solid transparent;
}

.chat::after {
  content: '10:34pm';
  font-size: 5px;
  position: absolute;
  bottom: 2px;
  right: 4px;
  color: #666;
}