html {
  height: 100%;
  font-size: 14px; 
  background-color: #ffffff;
}
body {
  width: 100%;
  height: 100%;
  margin: 0;
  box-sizing: border-box;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-family: Helvetica Neue, Helvetica, PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

a:focus,
a:active {
  outline: none;
}
ul {
  padding: 0;
}
li {
  list-style: none;
}
a,
a:focus,
a:hover {
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}
img {
  width: inherit;
  display: block;
}

div:focus {
  outline: none;
}
input,
textarea,
select {
  appearance: none !important;
  -moz-appearance: none !important;
  outline: none !important;
  -moz-outline: none !important;
  box-shadow: none !important;
  -moz-box-shadow: none !important;
}

.valid-width{
  margin: 0 auto;
  max-width: 1200px;
}

/* header */
.header {
  height: 80px;
}
.header > .logo {
  display: inline-block;
  padding-top: 22px;
  width: 140px;
  height: 33px;
}
/* section 块 */
.section, .banner {
  position: relative;
  width: 100%;
}
.section h2 {
  margin-top: 0;
  margin-bottom: 52px;
  font-size: 40px;
  text-align: center;
  font-weight: normal;
  color: #333333;
}
.section-content {
  display: flex;
  display: -ms-flexbox;
}

.company-about {
  padding-top: 52px;
  padding-bottom: 105px;
  background-color: #eff3f8;
}
.company-about:nth-of-type(odd) {
    background-color: #ffffff;
}

.about-left {
  width: 422px;
}

.about-right {
  flex: 1;
  flex-grow: 1;
  margin: 14px 0 23px 38px;
  font-size: 16px;
  font-weight: normal;
  line-height: 32px;
	letter-spacing: 0px;
	color: #333333;
}

/* advantage */
.advantage {
  padding-top: 58px;
  padding-bottom: 96px;
  background: url('../images/footer.png') no-repeat center;
  height: 400px;
  color: #ffffff;
}
.advantage h2 {
  color: #ffffff;
}
.advantage ul {
  display: flex;
  display: -ms-flexbox;
  width: 100%;
}
.advantage ul li {
  flex: 1;
  flex-grow: 1;
  text-align: center;
  display: inline-block;
}
.advantage ul li > img {
  width: 82px;
  height: 82px;
  display: inline-block;
}

/* footer */
footer {
  padding-top: 32px;
  padding-bottom: 32px;
  width: 100%;
  background-color: #403f3f;
  color: #aaaaaa;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0px;
}
.footer-box .filing {
  padding-top: 10px;
}
.footer-box .filing img {
  display: inline-block;
  padding: 0 5px;
  vertical-align: text-bottom;
}