/* 导航栏模块的样式 */

nav, article, footer {

  display: block;

}

a {

  text-decoration: none;

  color: #333;

}

body {

  background-color: #f3f5f7;

}

nav {

  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.5);

 }

.nav-container {

  min-height: 100px;

}

.nav-link {

  font-size: 20px;

}

.nav-link.active {

  border-bottom: 2px solid #00a4ff;

}

/* 轮播图模块 */

.course-banner {

  margin-top: 116px;

}

.course-banner .recommend {

  background-color: #fff;

  box-shadow: 1px 1px 2px 0px rgba(211, 211, 211, 0.5);

}

.course-banner .recommend a {

  padding: 20px;

  font-size: 16px;

  color: #333;

  border-radius: 5px;

}

.course-banner .recommend a i {

  float: left;

  width: 38px;

  height: 33px;

  margin: -5px 8px;

  background: url("../images/pic.png") no-repeat 0 0;

}

.course-banner .recommend ul li.fathli2 i {

  background-position: -38px 0;

}

.course-banner .recommend ul li.fathli3 i {

  background-position: -80px 0;

}

.course-banner .recommend ul li.fathli4 i {

  background-position: -120px 0;

}

.course-banner .recommend ul li.fathli5 i {

  background-position: -160px 0;

}

.course-banner .recommend ul li:hover {

  background-color: #f3f5f7;

}

/* 视频教程模块 */

.course-free .col p {

  font-size: 14px;

  line-height: 20px;

  color: #999;

}

.course-free .col p span {

  color: #fa6400;

}

.course-free .col p i {

  font-style: normal;

}

.title {

  font-size: calc(0.8rem + 1vw);

  text-align: center;

  letter-spacing: 1px;

}

.title-text {

  font-size: calc(0.5rem + 0.7vw);

  text-align: center;

  letter-spacing: 1px;

  color: #333;

}

.title-text .startLearning {

  color: red;

}

/* 视频教程模块——导航区域 */

.course-line {

  padding: 30px 0;

}

.course-line .course-tabs {

  border-bottom: 1px solid #ccc;

  flex-wrap: nowrap;

  overflow-x: auto;

}

.course-tabs li {

  padding-left: 20px;

  flex: 0 0 108px;

}

.course-tabs li a {

  color: #333;

  padding-bottom: 25px;

  font-size: 14px;

}

.course-tabs li a:hover,

.course-tabs li a.active {

  color: red;

  border-bottom: 3px solid #E92322;

}

.icon-container {

  align-items: center;

  justify-content: center;

}

.course-tabs li a i {

  float: left;

  width: 60px;

  height: 60px;

  margin: -5px 8px;

  background: url("../images/anijavaee.png") no-repeat 0 0;

  background-size: 60px;

  margin: 0 auto 8px;

}

.course-tabs li.icon-web i {

  background-image: url("../images/aniweb.png");

}

.course-tabs li.icon-python i {

  background-image: url("../images/anipython.png");

}

.course-tabs li.icon-ai i {

  background-image: url("../images/aniai.png");

}

.course-tabs li.icon-ui i {

  background-image: url("../images/aniui.png");

}

.course-tabs li.icon-test i {

  background-image: url("../images/anitest.png");

}

.course-tabs li.icon-xmt i {

  background-image: url("../images/anixmt.png");

}

.course-tabs li.icon-pm i {

  background-image: url("../images/anipm.png");

}

/* 视频教程模块——标签页内容区域 */

.course-box {

  height: 150px;

  background: #fff;

  box-shadow: 1px 2px 3px 1px #d8d8d8;

  margin-top: 20px;

  font-size: 12px;

  color: #666;

}

.course-box p {

  margin-bottom: 2px;

}

.course-box .course-box-left h3 {

  font-size: 16px;

  padding: 20px 0 5px;

  margin: 0;

  color: red;

}

.course-box .course-box-right {

  float: right;

  width: 108px;

  height: 100%;

  text-align: center;

  position: relative;

  border-left: 1px dashed #ccc;

}

.course-box .course-box-right::before,

.course-box .course-box-right::after {

  content: "";

  position: absolute;

  left: -6px;

  width: 12px;

  height: 12px;

  border-radius: 6px;

  background: #f5f5f5;

}

.course-box .course-box-right::before {

  top: -6px;

  box-shadow: 0 -2px 2px #d8d8d8 inset;

}

.course-box .course-box-right::after {

  bottom: -6px;

  box-shadow: 0 2px 2px #d8d8d8 inset;

}

.course-box.active .course-box-right p {

  color: #fff;

}

.course-box-right p:first-of-type {

  margin-bottom: 0;

  margin-top: 40px;

  color: #E92322;

}

.course-box-right p:first-of-type b {

  font-size: 40px;

}