@font-face {
  font-family: 'bb2253';
  src: url('');
  src: url('') format('embedded-opentype'), url('') format('woff2'), url('') format('woff'), url('') format('truetype'), url('') format('svg');
}
* {
  box-sizing: border-box;
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: Arial, 'Source Han Sans', 'PingFang SC', 'Helvetica Neue', Helvetica, 'Microsoft YaHei', sans-serif;
}

html {
  line-height: 1.1; 
  -webkit-text-size-adjust: 100%; 
}





body {
  margin: 0;
}



main {
  display: block;
}



h1 {
  font-size: 2em;
  margin: 0.67em 0;
}





hr {
  box-sizing: content-box; 
  height: 0; 
  overflow: visible; 
}



pre {
  font-family: monospace, monospace; 
  font-size: 1em; 
}





a {
  color: inherit;
  text-decoration: none;
  background-color: transparent;
}



abbr[title] {
  border-bottom: none; 
  text-decoration: underline; 
  text-decoration: underline dotted; 
}



b,
strong {
  font-weight: bolder;
}



code,
kbd,
samp {
  font-family: monospace, monospace; 
  font-size: 1em; 
}



small {
  font-size: 80%;
}



sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}





img {
  border-style: none;
}





button,
input,
optgroup,
select,
textarea {
  cursor: pointer;
  font-family: inherit; 
  font-size: 100%; 
  line-height: 1.15; 
  margin: 0; 
}
input,
textarea {
  cursor: initial;
}



button,
input {
  
  overflow: visible;
}



button,
select {
  
  text-transform: none;
}



button,
[type='button'],
[type='reset'],
[type='submit'] {
  -webkit-appearance: button;
  border: none;
}



button::-moz-focus-inner,
[type='button']::-moz-focus-inner,
[type='reset']::-moz-focus-inner,
[type='submit']::-moz-focus-inner {
  border-style: none;
  padding: 0;
}



button:-moz-focusring,
[type='button']:-moz-focusring,
[type='reset']:-moz-focusring,
[type='submit']:-moz-focusring {
  outline: 1px dotted ButtonText;
}



fieldset {
  padding: 0.35em 0.75em 0.625em;
}



legend {
  box-sizing: border-box; 
  color: inherit; 
  display: table; 
  max-width: 100%; 
  padding: 0; 
  white-space: normal; 
}



progress {
  vertical-align: baseline;
}



textarea {
  overflow: auto;
}



[type='checkbox'],
[type='radio'] {
  box-sizing: border-box; 
  padding: 0; 
}



[type='number']::-webkit-inner-spin-button,
[type='number']::-webkit-outer-spin-button {
  height: auto;
}



[type='search'] {
  -webkit-appearance: textfield; 
  outline-offset: -2px; 
}



[type='search']::-webkit-search-decoration {
  -webkit-appearance: none;
}



::-webkit-file-upload-button {
  -webkit-appearance: button; 
  font: inherit; 
}





details {
  display: block;
}



summary {
  display: list-item;
}





template {
  display: none;
}



[hidden] {
  display: none;
}


img {
  border: none;
  vertical-align: middle;
  display: inline-block;
  max-width: 100%;
  max-height: 100%;
}