html {
  box-sizing: border-box;
}

html,
body,
p,
span,
div,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
li,
ol {
  padding: 0px;
  margin: 0px;
  font-family: -apple-system-font, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', sans-serif, Arial;
}