@media screen and (weex-theme: colmo) {
  .borderRight {
    position: absolute;
    width: 1px;
    background-color: #3E4144;
    right: 0;
  }
  .borderBottom {
    position: absolute;
    height: 1px;
    background-color: #3E4144;
    bottom: 0;
  }
  .delta {
    width: 26px;
    height: 26px;
    background-color: #3E4144;
    position: absolute;
    right: -13px;
    bottom: -13px;
    transform: rotate(45deg);
  }
}