body {
  padding-top: 56px;
}
.left-aligned {
  margin-left: auto;
}
.bg-dark {
  background-color:#273799!important;
}
.bg-hero {
  background-color: #45b06cff;
}
.bg-white {
  background-color: #fff;
}
.bg-wrap {
  background-color: #9494d4;
}
.bg-black {
  background-color: #000;
  color: #fff;
}
.navbar {
  height: 66px;
}
.navbar-brand:link {
  color: #ffffff;
}
.navbar-brand:visited {
  color: #ffffff;
}
.navbar-brand:hover {
  color: #eeeeee;
}
.navbar-brand:active {
  color: #ffffff;
}
.menu:link {
  color: #ffffff;
}
.menu:visited {
  color: #ffffff;
}
.menu:hover {
  color: #eeeeee;
}
.menu:active {
  color: #ffffff;
}
header {
  height: 530px;
}
.no-bg {
  background: none;
}
.hide {
  display: none;
}
.row {
  margin-left: 0 !important;
  margin-right: 0 !important;
}
.flex-width {
  width: 1320px;
  margin: 20px auto !important;
  display: flex;
  justify-content: space-between;
}
.flex-width div:last-of-type {
  width: 560px;  
}
.flex-width div:first-of-type {
  width: 710px;
  /* line-height: 30px; */
}

/* home */
.navbar {
  background-color: #273799 !important;
}
.navbar-brand {
  position: relative;
  padding: 0 !important;
}
.nav-item {
  margin-left:5px;
}
.logo {
  width:60px;
  height: 60px;
  position: absolute;
  top: -12px;
}
.logo-title {
  margin-left: 80px;
  float: left;
  font-size: 24px;
  font-weight: bold;
}
.video {
  width: 1320px;
  margin: 0 auto;
}
video {
  width: 100%;
}
/* CALLOUT */
.bd-callout {
  padding: 1.25rem;
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
  border: 1px solid #e9ecef;
  border-left-width: 0.25rem;
  border-radius: 0.25rem;
}
.bd-callout h4 {
  margin-bottom: 0.25rem;
}
.bd-callout p:last-child {
  margin-bottom: 0;
}
.bd-callout code {
  border-radius: 0.25rem;
}
.bd-callout + .bd-callout {
  margin-top: -0.25rem;
}
.bd-callout-info {
  border-left-color: #5bc0de;
}
.bd-callout-warning {
  border-left-color: #f0ad4e;
}
.bd-callout-danger {
  border-left-color: #d9534f;
}

/* footer */
footer {
  background-color: #273799 !important;
}
.footer {
  height: 338px;
  max-width: 1320px;
  box-sizing: border-box;
  padding: 20px 0;
  text-align: center;
  
}
.footer .logo-name {
  color: #fff;
  font-size: 20px;
  text-align: center;
  width: 160px;
  display: inline-block;
  margin-bottom: 20px;
}
.footer .text-left .logo-name {
  /* float: right; */
  width: 300px;
}
.footer img {
  width: 160px !important;
  height: 160px !important;
  border-radius: 10px !important;
}
.footer .word {
  width: 300px !important;
}
footer a {
  color: white;
  font-weight: bold;
  text-decoration: none;
}
footer a:hover {
  color: white;
  text-decoration: underline;
}
.text-right {
  text-align: right;
}
.text-left {
  text-align: left;
}
/* home banner */
#myCarousel {
  width: 100%;
  height: 520px;
  margin: 10px auto;
  position: relative;
}
.carousel-item {
  height: 520px;
  overflow: hidden;
}
.cover-body {
  font-weight: bold;
  position: absolute;
  z-index: 99;
  bottom: 80px;
  left: 160px;
  text-shadow: 0 0 5px #000
}
.cover-title {
  font-size: 36px;
  color: #fff;
  margin-bottom: 40px;
}
.cover-content {
  color: #fff;
}
/* team */
.team-bg {
  width: 100%;
  position: fixed;
  z-index: -99;
  top: 66px;
  height: 520px;
}
.team-bg img{
  width: 100%;
}
.team-wrapper {
  background: #fff;
  width: 100%;
  padding: 30px 0;
  font-family: Arial,Helvetica,sans-serif;
}
.team {
  width: 1324px;
  margin: 0 auto;
  justify-content: space-between;
  flex-wrap: wrap;
  /* display: flex; */
  overflow: hidden;
}
.team—brand {
  width: 402px;
  height: 740px;
  float: left;
  margin-right: 58px;
}
.team—brand:nth-child(3) {
  margin-right: 0;
}
.team-member-wrapper {
  background: #eee;
  width: 100%;
  padding: 30px 0;
  font-family: Arial,Helvetica,sans-serif;
}
.team-member {
  width: 1324px;
  margin: auto;
  justify-content: space-between;
  flex-wrap: wrap;
  overflow: hidden;
  /* display: flex; */
}
.pic {
  width: 100%;
  height: 336px;
  background-size: 100% 100%;
  box-sizing: border-box;
}
.team .member,
.team-member .member {
  width: 100%;
  box-sizing: border-box;
  padding:10px 35px;
  background: #edebeb;
  text-align: left;
}
.team-member .member  {
  background: #fff;
}
.team .member .title {
  line-height: 30px;
  font-size: 18px;
  color: #000;
}
.team-member-name {
  line-height: 42px;
  border-bottom: 1px solid #333;
  margin: 10px 0 10px 10px;
  /* margin-bottom: 10px; */
}
.member .name {
  line-height: 36px;
  font-size: 28px;
  color: #000;
}
.member .content {
  height: 270px;
  overflow: auto;
  letter-spacing: 0em;
  color: #333;
  box-sizing: border-box;
}

.flip_wrap {
  perspective: 800px; /*perspective属性定义3D元素距视图的距离,以像素计。该属性允许您改变 3D 元素查看 3D 元素的视图。*/
  -webkit-perspective: 800px;
  -moz-perspective: 800px;
  -ms-perspective: 800px;
  -o-perspective: 800px;
  box-sizing: border-box;
}
.flip {
  width: 100%;
  height: 100%;
  backface-visibility: hidden; /*背对屏幕时隐藏*/
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  -ms-backface-visibility: hidden;
  -o-backface-visibility: hidden;
  transition: all 1s ease; /*为翻牌添加过渡效果*/
  -webkit-transition: all 1s ease;
  -moz-transition: all 1s ease;
  -ms-transition: all 1s ease;
  -o-transition: all 1s ease;
  transform-style: preserve-3d; /*子元素将保留其 3D 位置。*/
}
.side {
  width: 100%;
  height: 100%;
  position: absolute; /*让背面和正面重叠*/
  left: 0;
  top: 0;
  font-size: 16px;
}

.front {
  font-size: 18px;
  backface-visibility: hidden; /*背对屏幕时隐藏*/
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  -ms-backface-visibility: hidden;
  -o-backface-visibility: hidden;
  -webkit-transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
  -ms-transform: rotateY(180deg);
  -o-transform: rotateY(180deg);
  box-sizing: border-box;
  /* border: 1px solid #333; */
  position: relative;
  box-sizing: border-box;
}
.back {
  
}
.back img {
  width: 100%;
}
.flip_wrap:hover .flip {
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
  -ms-transform: rotateY(180deg);
  -o-transform: rotateY(180deg);
}
/* safety */
.safety-title {
  font-size: 20px;
  font-weight: bold;
}
.safety-title p {
  /* font-size: 16px !important; */
  font-weight: normal !important;
  text-indent: 2em;
}
.safety-title>li > ul > li {
  font-size: 20px;
  color: #000;
  list-style: none;
}
.safety-title>li > ul > li:before { content: "\2022"; color: #000; margin-right: 0.5em; }
/* protocols */
.protocols img{ 
  width: 100%;
}
.engineeringsuccess img{
  width: 100%;
}
/* educational */
.educational  img {
  margin-bottom: 10px;
}

.bd-callout-info {
  max-width: 1320px;
  margin: 10px auto;
}
h4 {font-size: 32px;}
h5 {font-size: 28px;}
h6 {font-size: 24px;}
p,li{
  font-size: 20px !important;
}
.big-tile {
  text-shadow: 0 0 5px #000
}
.human-practices .card {
  display: flex;
  flex-direction: inherit;
  padding: 10px;
  background: #5bc0de;
  color: #fff;
  font-weight: bold;
}
.human-practices .card .photo {
  width: 200px;
  height: 200px;
  margin-right: 20px;
}
.human-practices .card .photo img {
  width: 100%;
  height: 100%;
}
.human-practices .card .content {
  padding: 20px 0;
  flex: 1;

}
.human-practices .card .content p:nth-of-type(2) {
  margin-top: 60px;
}
.achievement {
  padding-bottom: 20px;
}
.wrap {
  margin: 20px auto;
  width: 1320px;
  box-shadow: 0 0 10px #efefef;
  border: 1px solid #eee;
  border-radius: 10px;
  margin-bottom: 0;
}
.honor {
  display: flex;
  width: 620px;
  margin: 0 auto;
  
  padding: 40px;
  box-sizing: border-box;
  
}
.medal {
  width: 200px;
  text-align: center;
  padding: 10px;
}
.medal img {
  width: 100%;
}
.honor .content {
  flex: 1;
}
.honor .content span {
  font-size: 24px;
  font-weight: bold;
  color: #333;
  text-shadow: 0 0 5px #ccc;
}