body {
	padding-bottom: 20px;
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
  
.navbar {
	margin-bottom: 20px;
	padding: 0;
}

.bd-placeholder-img {
	font-size: 1.125rem;
	text-anchor: middle;
	-webkit-user-select: none;
	-moz-user-select: none;
	user-select: none;
}

@media (min-width: 768px) {
	.bd-placeholder-img-lg {
	  font-size: 3.5rem;
	}
}

.b-example-divider {
	height: 3rem;
	background-color: rgba(0, 0, 0, .1);
	border: solid rgba(0, 0, 0, .15);
	border-width: 1px 0;
	box-shadow: inset 0 .5em 1.5em rgba(0, 0, 0, .1), inset 0 .125em .5em rgba(0, 0, 0, .15);
}

.b-example-vr {
	flex-shrink: 0;
	width: 1.5rem;
	height: 100vh;
}

.bi {
	vertical-align: -.125em;
	fill: currentColor;
}

.nav-scroller {
	position: relative;
	z-index: 2;
	height: 2.75rem;
	overflow-y: hidden;
}

.nav-scroller .nav {
	display: flex;
	flex-wrap: nowrap;
	padding-bottom: 1rem;
	margin-top: -1px;
	overflow-x: auto;
	text-align: center;
	white-space: nowrap;
	-webkit-overflow-scrolling: touch;
}

.navbar-cell .navbar-brand{
	font-size: 1.7em;
	letter-spacing: 0.1em;
	font-weight: 900;
}
.small-text {
	font-size: 0.8em; /* 设置小文字的字体大小 */
	letter-spacing: 0;
}
.navbar-cell .navbar-brand:hover{
	color: #0091cd;
}

.nav-justified .nav-item{
	flex-basis: content;
	white-space: nowrap;
}

.navbar-dark .navbar-nav .nav-link, .navbar-cell .navbar-nav .dropdown .nav-link{
	border: 0px solid #0091cd;
	font-size: 1.3em;
	font-weight: 400;
  	color: #fff;
	padding: 0.6em 1em;
}

.navbar-dark .navbar-nav .nav-link:hover, .navbar-cell .navbar-nav .dropdown .nav-link:hover{
	color: #0091cd;
  	border-bottom-width: 0.3em;
	padding-bottom: 0.3em;
}

/* navbar-link dropdown */
.navbar-cell .navbar-nav .dropdown-item{
	border: 0px solid #0091cd;
	font-size: 1.3em;
	font-weight: 400;
  	color: #000;
	padding: 0.4em 3em 0.4em 1.3em;
}

.navbar-cell .navbar-nav .dropdown-item:hover{
	color: #0091cd;
  	border-left-width: 0.3em;
	padding-left: 1em;
	padding-top: 0.4em;
	padding-bottom: 0.4em;
}

.dropdown:hover .dropdown-menu{
	display: block;
	border-radius: 0em;
	padding: 0;
}
/* End of Nav */

.card{
	position: sticky; /* 使其在滚动时固定 */
    top: 4em; /* 当滚动到顶部时固定 */
    z-index: 1000; /* 确保在其他元素上方 */
}

/* Footer */

.h-250 { height: 272px; }
@media (min-width: 768px) {
  .h-md-250 { height: 272px; }
}

.text-justify{
	text-align: justify;
}