/* 基础 Reset + Normalize，兼容 IE8+ */
html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  margin: 0;
}

article, aside, details, figcaption, figure, footer, header, hgroup, main, menu, nav, section, summary {
  display: block;
}

audio, canvas, progress, video {
  display: inline-block;
  vertical-align: baseline;
}

a {
  background-color: transparent;
}

a:active, a:hover {
  outline: 0;
}

b, strong {
  font-weight: bold;
}

img {
  border: 0;
}

svg:not(:root) {
  overflow: hidden;
}

figure {
  margin: 1em 40px;
}

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

pre {
  overflow: auto;
}

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

button, input, optgroup, select, textarea {
  color: inherit;
  font: inherit;
  margin: 0;
}

button {
  overflow: visible;
}

button, select {
  text-transform: none;
}

button, html input[type="button"], input[type="reset"], input[type="submit"] {
  -webkit-appearance: button;
  cursor: pointer;
}

button[disabled], html input[disabled] {
  cursor: default;
}

button::-moz-focus-inner, input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

input {
  line-height: normal;
}

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

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

input[type="search"] {
  -webkit-appearance: textfield;
  box-sizing: content-box;
}

input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;
}

legend {
  border: 0;
  padding: 0;
}

textarea {
  overflow: auto;
}

optgroup {
  font-weight: bold;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

td, th {
  padding: 0;
}