html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  font-weight: 400;
  font-synthesis: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: inherit;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1.125rem;
}

h5,
h6 {
  font-size: 1rem;
}

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}