health.applet/miniprogram/themes/button.scss

.button.button__line-1 {
  position: relative;

  .button__text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .button__bg {
    height: 54px;
    margin: auto;
  }

  .button__inner {
    position: absolute;
    top: 50%;
    left: 50%;
    max-width: 190px;
    width: 100%;
    height: 54px;
    transform: translate(-50%, -50%);
    opacity: 0;
    z-index: 11;
  }
}