body {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}
main {
	flex-grow: 1;
}
footer {
	flex-shrink: 0;
}

header nav {
	border-bottom: 1px solid #d1d1d1;
	font-weight: bold;
	display: flex;
	justify-content: space-between;
}

nav ul {
	margin: 0;
	padding: 0;
}

nav li {
	list-style: none;
}

nav .nav a {
	padding: 25px;
}
nav .nav a:hover {
	color: var(--bg-color);
	background-color: var(--color-primary) !important;
	text-decoration: none;
}
nav .brand img {
	width: 170px;
	height: 55px;
	margin: 10px 30px;
	display: block;
}

.mt-0 {
	margin-top: 0;
}
.mt-1 {
	margin-top: 1em;
}
.mt-2 {
	margin-top: 2em;
}

body > main:before {
	content: '';
	width: 213px;
	height: 149px;
	position: fixed;
	right: 15px;
	bottom: 80px;
	background: url(../img/s2.png) center no-repeat;
	z-index: 0;
	opacity: 0.3;
}
body > .footer{
		position: relative;
		overflow: hidden;
		height: 60px;
		background-color: #ffffff;
		border-top: 1px solid #ddd;
		padding: 20px 15px 0 15px;
	}
body > .footer:before {
	content: '';
	height: 175px;
	width: 540px;
	background: url(../img/bgimg.png) left top no-repeat;
	position: absolute;
	right: 0;
	bottom: 0;
	-webkit-transform: rotate(180deg);
	-moz-transform: rotate(180deg);
	-o-transform: rotate(180deg);
	-ms-transform: rotate(180deg);
	transform: rotate(180deg);
}

.vcenter {
	display: inline-block;
	vertical-align: middle;
	float: none;
}

.pin_code_document {
	margin: 0 auto;
	display:block;
	filter: drop-shadow(0px 4px 4px rgba(0, 0, 0, 0.25));
	backdrop-filter: blur(5px);
}