padding-inline-end

padding-inline-end: 20px;
writing-mode: horizontal-tb;

padding-inline-end: 20px;
writing-mode: vertical-rl;

padding-inline-end: 5em;
writing-mode: horizontal-tb;
direction: rtl;

<section id="default-example">
  <div class="transition-all" id="example-element">
    <div class="box">
      Far out in the uncharted backwaters of the unfashionable end of the
      western spiral arm of the Galaxy lies a small unregarded yellow sun.
    </div>
  </div>
</section>

#example-element {
  border: 10px solid #ffc129;
  overflow: hidden;
  text-align: left;
}

.box {
  border: dashed 1px;
  unicode-bidi: bidi-override;
}

/* <length> 值 */
padding-inline-end: 10px; /* 绝对长度 */
padding-inline-end: 1em; /* 相对于文本尺寸的长度 */

/* <percentage> 值 */
padding-inline-end: 5%; /* 相对于包含区块宽度的内边距 */

/* 全局值 */
padding-inline-end: inherit;
padding-inline-end: initial;
padding-inline-end: revert;
padding-inline-end: revert-layer;
padding-inline-end: unset;

<div>
  <p class="exampleText">示例文本</p>
</div>

div {
  background-color: yellow;
  width: 120px;
  height: 120px;
}

.exampleText {
  writing-mode: vertical-lr;
  padding-inline-end: 20px;
  background-color: #c8c800;
}