body {
  margin: 0;
  font-family: sans-serif;
  -ms-overflow-style: scrollbar;
  overflow-style: scrollbar;
  background-color: #DDD;
}

main {
  max-width: 700px;
  margin: auto;
  height: 100vh;
  background-color: #DDD;
  position: relative;
  display: flex;
  flex-direction: column;
}

.chat-box-container {
  margin: 0;
  flex-grow: 1;
  flex-direction: column;
  height: 0;
}

.chat-box-header {
  display: block;
  text-align: center;
}

.chat-box {
  margin: 4px 4px 4px 4px;
  border: 2px solid black;
  height: 50vh;
  flex-grow: 1;
  background-color: #FFF;
  overflow-y: scroll;
}

.chat-box p {
  margin: 0;
  padding: 6px;
  font-size: 26px;
}

.ai-person-container {
  display: block;
  overflow: auto;
}

.ai,
.person {
  overflow: auto;
  margin: 4px;
  border: 2px solid black;
  border-radius: 8px;
  display: inline-block;
}

.ai {
  text-align: left;
  margin-right: 36px;
  border-color: red;
  float: left;
  border-bottom-left-radius: 0px;
}

.person {
  text-align: left;
  margin-left: 36px;
  border-color: blue;
  float: right;
  border-bottom-right-radius: 0px;
}

.ai-date,
.person-date {
  font-size: 10px;
  clear: both;
}

.ai-date {
  float: left;
  margin-left: 6px;
}

.person-date {
  float: right;
  margin-right: 6px;
}

.chat-input-container {
  position: relative;
  height: 60px;
  margin-top: 50vh;
  display: flex;
  bottom: 0;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

.chat-input {
  height: 40px;
  width: auto;
  display: inline-block;
  flex-grow: 1;
  padding: 2px 2px 2px 2px;
  margin: 0 4px 0 4px;
  font-size: 32px;
  border: 2px solid black;
}

.chat-input:focus {
  outline: 0;
}

.chat-submit {
  width: 70px;
  height: 47px !important;
  padding: 2px 2px 2px 2px;
  margin-right: 4px;
  border: 2px solid black;
  background-color: #69AAFF;
  font-size: 18px;
}

.chat-submit:hover {
  cursor: pointer;
  background-color: #80BBFF;
}

.chat-submit:focus {
  outline: 0;
}

@media screen and (max-width: 480px) {
  .chat-box p {
    font-size: 30px;
  }
  .chat-input {
    width: 60%;
    float: left;
    font-size: 28px;
  }
  .chat-submit {
    float: right;
  }
}