@media (max-width: 639.99px){ html{font-size: 100px;} }
@media (min-width: 640px){ html{font-size: 100px;} }
@media (min-width: 860px){ html{font-size: 70px;} }
@media (min-width: 1200px){ html{font-size: 85px;} }
@media (min-width: 1620px){ html{font-size: 100px;} }

body {
  margin: 0;
  padding: 0;
  line-height: 1;
}
div {
  box-sizing: border-box;
}
p{
  margin: 0;
  padding: 0; 
  box-sizing: border-box;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section{
  display: block;
}

blockquote, q{
  quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after{
  content: '';
  content: none;
}

table{
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

/* custom */
a{
  /* display: inline-block; */
  color: inherit;
  list-style: none;
  text-decoration: none;
  -webkit-backface-visibility: hidden;
}
a:hover{
  /* color: inherit; */
  list-style: none;
  text-decoration: none;
  -webkit-backface-visibility: hidden;
}
::-webkit-scrollbar{
  width: 14px;
}
::-webkit-scrollbar-track-piece{
  background-color: rgba(0, 0, 0, 0.2);
}
::-webkit-scrollbar-thumb:vertical{
  height: 5px;
  background-color: rgba(125, 125, 125, 0.7);
}
::-webkit-scrollbar-thumb:horizontal{
  width: 5px;
  background-color: rgba(125, 125, 125, 0.7);
}

/*清除浮动*/
.clearfix:before,
.clearfix:after{
  content: " ";
  display: inline-block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.clearfix{
  *zoom: 1;
}