@media (max-width: 768px) {
  .h5-chat-shell {
    height: 100vh;
    height: 100svh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .h5-chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
  }

  .h5-chat-content-row {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
  }

  .h5-chat-content-row .chat-body {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .h5-chat-content-row .chat-body .messages-container {
    padding: 12px 16px 32px;
  }
}