4dkankan-components/packages/theme-chalk/scss/components/_slide.scss

.ui-slide {
  position: relative;
  height: 100%;

  .right,
  .left {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0,0,0,0.3);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
  }
  .right {
    right: 10px;
  }

  .left {
    left: 10px;
  }
}