html,
body {
  height: 100%;
  margin: 0;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding-left: 16px;
}

h1,
form,
footer {
  flex-shrink: 0;
}

.scroll-area {
  flex: 1;
  overflow-y: auto;
  border: 2px solid #333;
}

textarea {
  width: 300px;
  height: 80px;
}

#list {
  width: 100%;
  overflow-y: auto;
  border: 1px solid #ccc;
}

.post-text {
  white-space: pre-wrap;
}