* {
    padding: 0;
    margin: 0;
    appearance: none;
    box-sizing: border-box;
  }
  
  html {
    -webkit-text-size-adjust: 100%;
  }
  
  body {
    font-family: "Microsoft YaHei", "微软雅黑","Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB",  Arial, sans-serif;
    color: #333333;
    font-size: 14px;
    -webkit-tap-highlight-color: transparent;
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
  
  b,
  strong {
    font-weight: bolder;
  }
  
  abbr[title] {
    border-bottom: none;
    text-decoration: underline;
    text-decoration: underline dotted;
  }
  
  code,
  kbd,
  samp {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
  }
  
  small {
    font-size: 80%;
  }
  
  hr {
    box-sizing: content-box;
    height: 0;
    overflow: visible;
  }
  
  a:focus,
  a:active {
    outline: none;
  }
  
  a,
  a:focus,
  a:hover {
    background-color: transparent;
    cursor: pointer;
    color: inherit;
    text-decoration: none;
  }
  
  pre {
    font-size: 1em;
  }
  
  div:focus {
    outline: none;
  }
  
  ul, li {
    list-style: none;
  }
  
  img {
    border: none;
    vertical-align: middle;
  }
  
  button, input, select, textarea {
    outline: none;
  }
  
  button, input[type=button], input[type=checkbox], input[type=radio], input[type=rest], input[type=submit], select {
    cursor: pointer;
  }
  
  button, input[type=button], input[type=number], input[type=password], input[type=rest], input[type=submit], input[type=tel], input[type=text], textarea {
    appearance: none;
    outline: none;
  }
  
  fieldset {
    padding: 0;
  }
  
  sub,
  sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
  }
  
  sub {
    bottom: -0.25em;
  }
  
  sup {
    top: -0.5em;
  }
  
  button,
  input {
    overflow: visible;
  }
  
  button,
  select {
    text-transform: none;
  }
  /* 滚动条优化 start */
::-webkit-scrollbar{
  width: 7px;
  height: 7px
}
::-webkit-scrollbar-track{
  background: #f6f6f6;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb{
  background: #cdcdcd;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover{
  background: #747474;
}
::-webkit-scrollbar-corner {
  background: #f6f6f6;
}
/* 滚动条优化 end */