* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: Microsoft YaHei,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Helvetica Neue,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #fff;
  color: #3d4357;
  min-width: 1360px;
  min-height: 100vh;
  display: flex
}
.alignright {
  text-align: right;
}
.aligncenter {
  text-align: center;
}
#layout {
  position: relative;
  min-height: 100%;
  padding-bottom: 160px;
  min-width: 1360px;
  width: 100%;
}
.header {
  height: 70px;
  display: flex;
  padding: 0 2rem;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background-color: #fff;
}
.header .logo {
  height: 60px;
}
.nav {
  width: 40%;
  display: flex;
  height: 100%;
  align-items: center;
}
.nav div,
.nav a {
  border-top: 3px solid #fff;
  margin-right: 5rem;
  height: 90%;
  display: flex;
  cursor: pointer;
  align-items: center;
  color: inherit;
  text-decoration: none;
}
.nav div.active {
  border-color:#d10000;
  color: #d10000;
}
.footer {
  color: #fff;
  position: absolute;
  width: 100%;
  bottom: 0;
  height: 160px;
}
.footertop {
  height: 136px;
  font-size: 12px;
  background-color: #363839;
}
.footertop h2 {
  padding: 1.5rem 0 1rem;
  font-size: 16px;
}
.footertop p {
  margin-bottom: 0.5rem;
}
.footerbot {
  height: 24px;
  display: flex;
  align-items: center;
  font-size: 12px;
  justify-content: center;
  background-color: #282a2b;
}
.contentbox {
  width: 60%;
  margin: 0 auto;
}
.banner img {
  width: 100%;
  margin: 0 auto;
  display: block;
}
.contentHome {
  display: flex;
  text-align: center;
  justify-content: space-between;
  padding-top: 1.5rem;
}
.contentHome > div {
  background-color: #f4f4f4;
  border-radius: 5px;
  width: 48.5%;
  padding: 2rem 2rem;
  text-align: center;
}
.contentHome > div img {
  width: 30px;
  display: block;
  margin: 0 auto;
}
.contentHome > div h2 {
  font-size: 18px;
  font-weight: bold;
  padding: 1rem 0 1.5rem;
}
.contentHome > div h3 {
  font-size: 13px;
  font-weight: normal;
}
.contentHome > div a {
  display: block;
  color: #d10000;
  font-size: 12px;
  margin-top: 1.5rem;
}
.contentProduct {
  display: flex;
  text-align: center;
  justify-content: space-between;
  padding: 1rem 0;
  width: 95%;
  margin: 0 auto;
}
.contentProduct > div {
  width: 32%;
  padding: 0;
  text-align: justify;
  font-size: 13px;
  line-height: 1.75;
}
.contentProduct > div img {
  display: block;
  margin: 0 auto;
  width: 90%;
}
.contentWhy {
  display: flex;
  padding-top: 2rem;
  justify-content: space-evenly;
}
.contentWhy > div {
  width: 500px;
}
.contentWhy h2 {
  padding: 1.5rem 0;
  font-size: 18px;
  text-align: center;
}
.contentWhy h3 {
  font-size: 14px;
  font-weight: normal;
  padding: 0 2rem;
  line-height: 1.5;
}
.about-header {
  height: 60px;
  background-color: #ececec;
}
.about-header > div {
  width: 60%;
  margin: 0 auto;
  line-height: 60px;
}
.contentAbout {
  display: flex;
  padding: 2rem 0;
  width: 60%;
  margin: 0 auto;
}
.contentAbout > div {
  padding-left: 2rem;
  padding-top: .5rem;
  line-height: 1.5;
  font-size: 14px;
}
.contentAbout > div p {
  text-align: justify;
  margin-bottom: 2rem;
}