.t-slds__caption {
    left: auto !important;
    right: 40px !important;
    bottom: 40px !important;
    text-align: right;
}
@media screen and (max-width: 640px) {
  .t-slds__caption {
    right: 20px !important;
    bottom: 20px !important;
    font-size: 16px !important;
  }
}