* {
  box-sizing: border-box;
}
*, *::before, *::after {
  margin: 0;
  padding: 0;
}
body, html {
  cursor: none;
  height: 100vh;
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 2em;
  color: #fff;
}
span link.{
  display: inline-block;
  margin: 0 auto;
  text-align: center;
  line-height: 100px;
}
.img{ /* 一般图片格式 */
  min-height: 250px;
  min-width: 200px;
  margin-top: 30px;
}
.img1 {
  background-image: url('../img/11.jpg');
  min-height: 1000px;
  background-size: cover;
  color: #fff;
}
.img2 {
  background-image: url('../img/22.jpg');
  min-height: 1000px;
  background-size: cover;
}
.img3 {
  background-image: url('../img/33.jpg');
  min-height: 1000px;
  background-size: cover;
}
.img1, .img2, .img3 {
  position: relative;
  opacity: 0.7;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
}
.heading {
  position: absolute;
  top: 35%;
  text-align: center;
  width: 100%;
  text-transform: uppercase;
  color: #fff;
  font-family: Abel, serif;
  font-size: 30px;
  font-weight: 500;
  letter-spacing: 15px;
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.6);
}

/* 其他 */
.section {
  text-align: center;
  padding: 50px 80px;
}
.sectiona{
  padding: 50px 80px;
  color: rgb(245, 245, 245);
}
.section1 {
  background-color: #000;
}
.section2 {
  background-color: #000;
}
.section3 {
  background-color: #000;
}
h1 {
  font-family: Abel, serif;
  text-transform: uppercase;
  font-weight: 100;
  letter-spacing: 5px;
  padding-bottom: 20px;
}
h2 {
  font-family: Abel, serif;
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: 5px;
  padding-bottom: 20px;
}
p {
  font-family: Abel, serif;
  text-transform: capitalize;
  letter-spacing: 2px;
  margin-left: 200px;
  margin-right: 200px;
  margin-bottom: 25px;
}
#p1 {
  font-family: Abel, serif;
  text-transform: capitalize;
  letter-spacing: 2px;
  line-spacing: 20px;
  margin-left: 66px;
  margin-right: 66px;
  margin-bottom: 25px;
}
#p2 { /* 分工 */
  text-transform: capitalize;
  left: 50%;
}
#footer {  /* 下方链接 */
  position: absolute;
  left: 50%;
  bottom: 0;
  text-align: center;
}
@media only screen and (min-width: 300px) {
  span {
    line-height: 1.6em;
  }
}
@media only screen and (max-width: 300px) {
  .img1, .img2, .img3 {
    background-attachment: scroll;
  }
}

.ani1 {
animation: fadeInAnimation ease 5s;
animation-iteration-count: 1; /*设置动画播放次数*/
animation-fill-mode: forwards; /*设置样式以在动画不播放时应用元素。forward是设置动画结束后，使用元素的结束属性值*/
}

@keyframes fadeInAnimation {
0% {
opacity: 0; /*设置不透明度*/
}
25% {
opacity: 0.24;
}
50% {
opacity: 0.6;
}
75% {
opacity: 0.74;
}
100% {
opacity: 1;
}
}

/*轮播图*/

.slider {
    position: relative;
    overflow: hidden;
    width: 100%;
    height: 100vh;
}

.slider-items {
    display: flex;
    transition: transform 0.3s ease-in-out;
}

.slider-item {
    flex: 0 0 auto;
    width: 100%;
}

.slider-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    background: rgba(0,0,0,0);
    color: #fff;
    border: none;
    font-size: 40px;
}

.slider-button-prev {
    left: 10px;
}

.slider-button-next {
    right: 10px;
}


/* 导航栏 */
.sidenav {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 999;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

.sidenav a {
  padding: 8px 8px 30px 77px;
  text-decoration: none;
  font-size: 33px;
  color: #87a0a6;
  display: block;
  transition: 0.3s;
}

.sidenav a:hover {
  color: #f1f1f1;
}

.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}

@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}