discourse/app/assets/stylesheets/common/base/edit-topic-timer-modal.scss

.edit-topic-timer-modal {
  .select-kit.combo-box {
    width: 100%;
  }
  .radios {
    margin-bottom: 10px;
  }
  label {
    display: inline-flex;
    padding-right: 5px;
    align-items: center;
    input {
      margin-top: 0;
    }
  }
  .topic-timer-duration {
    width: 100%;
  }
  .pika-single {
    position: absolute !important; /* inline JS styles */
  }

  .modal-topic-timer-info {
    margin-top: 1rem;
    .topic-timer-info {
      border-top: 0;
    }
  }
}