* {
  box-sizing: border-box;
}
body {
  background: url(../img/mang/bg.png);
  background-attachment: fixed;
  background-position: center; /* 背景图片居中 */
  background-repeat: no-repeat; /* 背景图片不重复 */
  background-size: cover; /* 背景图片覆盖整个视口 */
  font-size: 14px;
}
.w {
  width: 80%;
  margin: 0 auto;
}
.navbar {
  background-color: rgba(13, 13, 13, 0);
}
.navbar.sticky {
  background-color: #e7f3f1;
  color: #000;
}
.navbar-nav li {
  margin: 0 25px;
}
.navbar-nav li a.active,
.navbar-nav li:hover a {
  color: #000;
  font-weight: 700;
}
.navbar-nav li a {
  color: #000;
  font-weight: 500;
}
.navbar-nav li a::before {
  background-color: #000;
}
.navbar .navbar-toggler .icon-bar {
  background-color: #000;
}
.navbar .navbar-toggler {
  border-color: #000;
}

.home {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.home h4 {
  opacity: 0.7;
  /** 文本1 */
  font-size: 400%;

  font-weight: 400;
  letter-spacing: 0px;
  line-height: 72.4px;
  color: rgba(0, 0, 0, 1);
  text-align: left;
  vertical-align: top;
}
.home h1 {
  width: 80%;
  margin-top: 0.5%;
  text-align: center;
  font-size: 700%;
  /** 文本1 */
  font-weight: 500;
  letter-spacing: 3px;
  line-height: 130.32px;
  color: rgba(56, 56, 56, 1);
  text-align: center;
  vertical-align: top;
}

.home .content {
  margin-top: 2%;
  width: 50%;
  opacity: 0.7;
  /** 文本1 */
  font-size: 300%;
  font-weight: 400;
  letter-spacing: 0px;
  line-height: 57.92px;
  color: rgba(0, 0, 0, 1);
  text-align: center;
  vertical-align: top;
}

.about {
  display: flex;
  justify-content: space-evenly;
  height: 100vh;

}
.left{
  padding-top:5%;
}
.left h1 {
  opacity: 1;
  /** 文本1 */
  font-size: 600%;
  font-weight: 700;
  letter-spacing: 0px;
  line-height: 99px;
  color: rgba(49, 31, 9, 1);
  text-align: center;
  vertical-align: top;
}
.left h4 {
  opacity: 1;
  /** 文本1 */
  font-size: 400%;
  font-weight: 700;
  letter-spacing: 0px;
  line-height: 99px;
  color: rgba(49, 31, 9, 1);
  text-align: center;
  vertical-align: top;
}

.left .content {
  opacity: 1;
  /** 文本1 */
  font-size: 150%;
  font-weight: 400;
  letter-spacing: 0px;
  line-height: 40px;
  color: rgba(56, 56, 56, 1);
  text-align: center;
  vertical-align: top;
}
.left span {
  margin-top: 20%;
  display: block;
  opacity: 1;
  /** 文本1 */
  font-size: 120%;
  font-weight: 400;
  letter-spacing: 0px;
  line-height: 40px;
  color: rgba(163, 163, 163, 1);
  text-align: center;
  vertical-align: top;
}
.left .btn-box {
  margin-top: 10px;
  width: 100%;
  text-align: center;
}
.left button {
  width: 40%;
  padding: 20px 0;
  opacity: 1;
  border-radius: 162.94px;
  background: rgba(156, 156, 156, 1);
  color: white;
  border: 0;
}
.right_bg{
  width: 40%;
  height: 80%;
  display: flex;
justify-content: center;align-items: center;
  background:url(../img/mang/item_bg.png) no-repeat;
  background-size: 100% 100%;
}
.right {
  margin: 0 auto;
  width: 60%;
  height:90%;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.3);

}

.right img {
  width: 100%;
  height: 100%;
}

.img-none {
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
}

.footer {
  position: relative;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.footer h1 {
  opacity: 1;
  /** 文本1 */
  font-size: 450%;
  font-weight: 400;
  letter-spacing: 0px;
  line-height: 95.57px;
  color: rgba(49, 31, 9, 1);
  text-align: center;
  vertical-align: top;
}

.footer .info {
  margin-top: 20px;
  margin-bottom: 30px;
  font-size: 20px;
}

.info_box {
  display: flex;
  justify-content: space-between;
  width: 60%;
  margin-top: 40px;
}
.info_box > .info_left {
  margin-right: 10px;
}
.info_left {
  background-color: #fff;
  padding: 20px 30px;
  border-radius: 10px;
  width: 15%;
  text-align: center;
  white-space: nowrap;
}

.info_right {
  background-color: #fff;
  padding: 20px 30px;
  border-radius: 10px;
  width: 80%;
}