*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Courier New', Courier, monospace;
}

body{
  background-color: #ceb3b3;
}

input, button {
  appearance: none;
  outline: none;
  border: none;
  background: none;
}

input {
  display: block;
  width: 100%;
  background-color: #f4f4f4;
  padding: 12px 16px;
  font-size: 18px;
  color: antiquewhite;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

header {
 display: flex;
 padding-top: 128px;
 padding-bottom: 32px;
 background-color: aquamarine;
 align-items: center;
 justify-content: flex-end;
 flex-direction: column;
}

h1{
  font-size: 32px;
  color: #333;
  margin-bottom: 16px;
}

.message strong{
  color: #520954;
}

#message_form{
  display: flex;
}

#message_send{
  appearance: none;
  background-color: aqua;
  padding: 4px 8px;
  color: aliceblue;
}

#messages{
  flex: 1 1 0%;
  overflow: scroll;
  padding: 16px;
}