css让字体平均铺满容器

<div class="label">账号</div>

.label {
  width: 60px;
  height: 31px;
  line-height: 31px;
  padding-right: 10px;
  text-align: justify;
}

.label::after {
  display: inline-block;
  width: 100%;
  content: "";
}

效果