/* 导航样式 */
body {
    background-color: #f5f5f5;
}
html {
    scroll-behavior: smooth;
}
.header {
    width: 100%;
    background-color: hsl(221, 24%, 13%);
    padding: 0;
    font-size:18px;
}

.header .nav-button {
    padding: 0;
    background-color: #fff;
}

.header .logo {
    color: #fff;
}

.header .nav-item {
    padding: 0 30px;
}

.header .nav-item>a {
    color: #fff;
    position: relative;
    text-align: center;
}


.header .nav-item>a:hover,
.header .nav-item>a:focus {
    color: #11aa8c;
}

.header .navbar-nav .dropdown .dropdown-menu {
    background-color: #191e29;
    border: none;
}

.header .navbar-nav .dropdown .dropdown-menu a {
    color: #fff;
}

.header .navbar-nav .dropdown .dropdown-menu a:hover {
    color: #11aa8c;
    background-color: #d5dae6;
}

/* 导航条模块 */
.elevator {
    opacity: 0;
    width: 60px;
    position: fixed;
    top: 300px;
    right: 25px;
    background-color: #ffffff;
    box-shadow: 0 0 1px rgba(0, 0, 0, .5);
    transition: .3s linear;
}

.elevator ul {
    font-size: 16px;
    text-align: center;

}

.elevator ul li {
    padding: 10px;
    cursor: pointer;
}

.elevator ul li a {
    width: 100%;
    height: 100%;
}

.elevator ul a.active {
    color: lightseagreen;
}

.elevator ul a:hover {
    color: lightseagreen;
}


/* 轮播图样式 */

.banner1 {
    margin-top: 40px;
}

.banner2 {
    display: none;
}


/*前端学习模块*/
.line-and-laboratory {
    background-color: #fff;
    padding: 50px 0;
}

.line-and-laboratory .item-header {
    margin-bottom: 50px;
}

.line-and-laboratory .item-header .line {
    width: 12%;
    display: inline-block;
    border-top: 1px solid #777;
    margin-bottom: 10px;
}

.line-and-laboratory .item-header .item-title {
    width: 200px;
    display: inline-block;
    color: #777;
    font-size: 30px;
}

/* 了解前端 */
.line-and-laboratory .con {
    width: 100%;
    margin-bottom: 64px;
    padding: 20px 90px;
    background-color: #eee;
}

.line-and-laboratory .know {
    text-align: left;
    color: #2b2a2a;
}

.abtBtnGroup {
    text-align: center;
    margin: 30px;
}

.abtBtnGroup .btnright {
    width: 150px;
    color: #ffffff;
    font-size: 20px;
    margin: 0 10px;
    opacity: .8;
    background-image: linear-gradient(to right, #14b693, #18dade);
}

.abtBtnGroup .btn:hover {
    opacity: 1;
    transform: scale(1.02);
}

.line-and-laboratory .know h3,
.line-and-laboratory .tool h3 {
    padding-bottom: 20px;
    font-size: 22px;
    color: #11aa8c;
    /* text-align: left; */
}


.line-and-laboratory .tool span {
    display: block;
    margin: 10px 0;
    text-align: center;
    transition: .3s;
    padding: 10px 20px;
    background-color: #11aa8c;
    color: #fff;
    border-radius: 10px;
}

.line-and-laboratory .tool .box a:hover {
    transform: scale(1.02);

}

.path-item {
    height: 100px;
    margin-bottom: 10px;
    position: relative;
    transition: .3s;
}

.path-item:hover {
    box-shadow: 0 0 3px #ccc;
    transform: translate3d(0, -2px, 0);
}

.path-item .row {
    padding: 0;
}

.path-item .path-name {
    color: #565656;
    font-size: 18px;
    padding-top: 20px;
}

.path-item .path-course-num {
    color: #9b9da2;
    font-size: 14px;
    padding-top: 10px;
}

.path-item .desc-layer .center {
    height: 60px;
    color: #fff;
    font-size: 12px;
    line-height: 20px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.line-and-laboratory .watch-all {
    margin-top: 14px;
}

.line-and-laboratory .watch-all a {
    color: #787878;
    font-size: 14px;
}

.line-and-laboratory .watch-all a:focus,
.line-and-laboratory .watch-all a:hover {
    color: #0c9;
    text-decoration: none;
}

/*案例模块*/
.case {
    padding: 50px 0;
}

.case a {
    margin-bottom: 20px;
    position: relative;
}

.case a img.pic {
    width: 100%;
}


/*页尾模块*/
.footer {
    background: #191e29;
    color: #fff;
}

.footer .footer-top {
    height: 100px;
    line-height: 100px;
    text-align: center;
}

.copyright {
    height: 50px;
    line-height: 50px;
    background: #171918;
}

a.sitebeian,a.sitebeian:hover{
	color:white;
	text-decoration:none;
}

a{text-decoration: none;}


.ul_auto,.ul_auto li{
	list-style-type:disc;
}