body,
div,
span,
header,
footer,
nav,
section,
aside,
article,
ul,
dl,
dt,
dd,
li,
a,
p,
h1,
h2,
h3,
h4,
h5,
h6,
i,
b,
textarea,
button,
input,
select,
figure,
figcaption {
  padding: 0;
  margin: 0;
  list-style: none;
  font-style: normal;
  text-decoration: none;
  border: none;
  color: #333;
  font-weight: normal;
  font-family: 'Microsoft Yahei';
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

/*定义滚动条高宽及背景 高宽分别对应横竖滚动条的尺寸*/
::-webkit-scrollbar {
  width: 0px;
  height: 0px;
  background-color: #f5f5f5;
}

/*定义滚动条轨道 内阴影+圆角*/
::-webkit-scrollbar-track {
  -webkit-box-shadow: inset 0 0 1px rgba(0, 0, 0, 0);
  border-radius: 10px;
  background-color: #f5f5f5;
}

/*定义滑块 内阴影+圆角*/
::-webkit-scrollbar-thumb {
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
  background-color: #555;
}

input {
  -webkit-appearance: none;
  border: none;
  outline: none;
}

textarea {
  -webkit-appearance: none;
}

html,
body {
  height: 100%;
  width: 100%;
  background-color: #fff;
}

/*解决点击延迟300ms的问题*/
html {
  touch-action: manipulation;
}