body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

/* 为顶部导航添加黑色背景颜色 */
.topnav {
  overflow: hidden;
  background-color: rgba(3,3,3,0.5); /* 半透明 */
  position: fixed; /* 将导航栏设置为固定位置 */
  top: 0; /* 将导航栏放在页面顶部 */
  width: 100%; /* 全宽 */
  z-index: 99;  /* 避免被背景覆盖 */
}

/* 为导航栏内的链接设置样式 */
.topnav a.logo {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;

  font-size: 17px;
}

/* 为导航栏内的链接设置样式 */
.topnav a.menu {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  width: 20%;   /* 5个等宽的链接 */

  font-size: 17px;
}

/* 改变悬停时链接的颜色 */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}

/* 添加一个活动类以突出显示当前页面 */
.topnav a.active {
  background-color: #4CAF50;
  color: white;
}

/* 隐藏应该在小屏幕上打开和关闭 topnav 的链接 */
.topnav .icon {
  display: none;
}

/* 当屏幕宽度小于 600 像素时，隐藏所有链接，除了第一个（“主页”）。 显示包含应打开和关闭顶部导航 (.icon) 的链接 */
@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {
    display: none;
  }
  .topnav a.icon {
    float: right;
    display: block;
  }
  .topnav button.icon {
    float: right;
    display: block;
  }
}

/* 当用户点击图标时，“responsive”响应类被添加到带有 JavaScript 的 topnav 中。 此类使 topnav 在小屏幕上看起来不错（垂直显示链接而不是水平显示链接）*/
@media screen and (max-width: 600px) {
  .topnav.responsive {
      position: relative;
  }
  .topnav.responsive a.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive i.icon {
    float: right;
    display: block;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
    width: 100%;
  }
}
a {
  color:#000000;
}

.slider-item {
/*  background-position: center;
  background-size: contain;*/
}

/* 联系方式 开始 */
.contact_weixin {
  display: inline-block;
  position: fixed;
  bottom: 0px;
  left: 0px;
  width: 150px;
  height: 150px;
  /* line-height: 50px; */
  /* text-align: center;
  -webkit-border-radius: 50%;
  border-radius: 50%;
  border: 3px solid #075798;
  color: #075798;
  font-size: 30px;
  background-color: #160f09; */
  /* background-image:url("/static/images/contact.f5af6de4a6cb.jpg"); */

  z-index: 9999;
}
/* 联系方式 结束*/

/* 隐藏/显示 回到顶部 开始 */
.gotoTop {
  display: inline-block;
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  line-height: 50px;
  text-align: center;
  -webkit-border-radius: 50%;
  border-radius: 50%;
  border: 3px solid #075798;
  color: #075798;
  font-size: 30px;
  background-color: #160f09;
  /* background-image:url("/static/images/contact.f5af6de4a6cb.jpg"); */
  opacity: 0;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  z-index: 9999;
}
.gotoTop .fa {
  color: #075798;
}
.gotoTop_show {
  opacity: 1;
}
.gotoTop_hide {
  opacity: 0;
}
.gotoTop:hover {
  background-color: #555;
}
/* 隐藏/显示 回到顶部 结束 */


/* 自动隐藏顶部导航条 开始 */
.autohide{
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    width: 100%;
    z-index: 1030;
}
.scrolled-down{
    transform:translateY(-100%); transition: all 0.3s ease-in-out;
}
.scrolled-up{
    transform:translateY(0); transition: all 0.3s ease-in-out;
}
/* 自动隐藏顶部导航条 结束  */

.bluebg{
  background:#336699;
  color: #ffffff;
} 
.graybg{
  background:#f7f7f7;
  color: #000000;
}

.special {
  margin-top: 150px;
}
/* 奇偶不同背景 */
.special:nth-child(odd) {
  background-color: #fff;
}
.special:nth-child(even) {
  background-color: #eff;
}
/* 奇偶不同背景 结束 */

/* 动画设置 */
.moveing {
    animation: zoom-in-out 10s linear 2s infinite normal;
    /* Firefox: */
    -moz-animation: zoom-in-out 10s linear 2s infinite normal;
    /* Safari and Chrome: */
    -webkit-animation: zoom-in-out 10s linear 2s infinite normal;
    /* Opera: */
    -o-animation: zoom-in-out 10s linear 2s infinite normal;
}

svg-disabled {
    animation: rotate 5s linear 2s infinite normal;
    /* Firefox: */
    -moz-animation: rotate 5s linear 2s infinite normal;
    /* Safari and Chrome: */
    -webkit-animation: rotate 5s linear 2s infinite normal;
    /* Opera: */
    -o-animation: rotate 5s linear 2s infinite normal;
}

/* move begin */
@keyframes movement
{
    0%   {background:red; left:0px; top:0px;}
    25%  {background:yellow; left:200px; top:0px;}
    50%  {background:blue; left:200px; top:200px;}
    75%  {background:green; left:0px; top:200px;}
    100% {background:red; left:0px; top:0px;}
}

@-moz-keyframes movement /* Firefox */
{
    0%   {background:red; left:0px; top:0px;}
    25%  {background:yellow; left:200px; top:0px;}
    50%  {background:blue; left:200px; top:200px;}
    75%  {background:green; left:0px; top:200px;}
    100% {background:red; left:0px; top:0px;}
}

@-webkit-keyframes movement /* Safari and Chrome */
{
    0%   {background:red; left:0px; top:0px;}
    25%  {background:yellow; left:200px; top:0px;}
    50%  {background:blue; left:200px; top:200px;}
    75%  {background:green; left:0px; top:200px;}
    100% {background:red; left:0px; top:0px;}
}

@-o-keyframes movement /* Opera */
{
    0% 100%  {background:red; left:0px; top:0px;}
    25%  {background:yellow; left:200px; top:0px;}
    50%  {background:blue; left:200px; top:200px;}
    75%  {background:green; left:0px; top:200px;}
    0% 100% {background:red; left:0px; top:0px;}
}
/* move end */

/* rotate begin */
@keyframes rotate
{
    0% 50% 100% { transform: rotate(0deg); }
    25%  { transform: rotate(2deg); }
    75%  { transform: rotate(-2deg); }
}

@-moz-keyframes rotate /* Firefox */
{
    0% 50% 100% { transform: rotate(0deg); }
    25%  { transform: rotate(2deg); }
    75%  { transform: rotate(-2deg); }
}

@-webkit-keyframes rotate /* Safari and Chrome */
{
    0% 50% 100% { transform: rotate(0deg); }
    25%  { transform: rotate(2deg); }
    75%  { transform: rotate(-2deg); }
}

@-o-keyframes rotate /* Opera */
{
    0% 50% 100% { transform: rotate(0deg); }
    25%  { transform: rotate(2deg); }
    75%  { transform: rotate(-2deg); }
}
/* rotate end */

/* zoom in and zoom out begin */
@keyframes zoom-in-out
{
    0%   { transform: scale(1); }
    100%  { transform: scale(2); }
}

@-moz-keyframes zoom-in-out /* Firefox */
{
    0%   { transform: scale(1); opacity: 1; }
    100%  { transform: scale(2); opacity: 0; }
}

@-webkit-keyframes zoom-in-out /* Safari and Chrome */
{
    0%   { transform: scale(1); opacity: 1; }
    100%  { transform: scale(2); opacity: 0; }
}

@-o-keyframes zoom-in-out /* Opera */
{
    0%   { transform: scale(1); opacity: 1; }
    100%  { transform: scale(2); opacity: 0; }
}
/* zoom in and zoom out end */
.site {
  color: red;
}