.cb__list {
  padding: 0;
  list-style-type: none;
  font-family: sans-serif;
  width: 450px;
  margin: 0 auto;
  overflow: hidden; }
  .cb__list .bubble {
    /* box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.2); */
    display: inline-block;
    line-height: 1.45em;
    border-radius: 3px;
    margin: 0 0 1em 0;
    text-align: left;
    position: relative;
    padding: 6px 12px;
    background: #fff;
    font-size: 19px;
    border: none;
    max-width: 90%;
    min-width: 44px;
    min-height: 12px; 
  }
    .cb__list .bubble.typing {
      animation: cb-font-fade 1.2s ease-in-out infinite; }

@keyframes cb-font-fade {
  50% {
    opacity:.1; }
  100% {
    opacity:1 } }