*{
	margin: 0;
	padding: 0;
}
a {
	text-decoration: none;
	transition: 0.3s case-out;
}
li{
	text-decoration: none;
	list-style: none;
}
body {
	font-family: 'Noto Serif', с засечками;
}


/*   +++++++++++++++++++++++++++++++++++++++++


body
++++++++++++++++++++++++++++++++++++++++++++   */
.pf_sp {
	padding-top: 50px;
	padding-bottom: 50px;
	text-align: center;
}
.pf_sp img {
	margin-bottom: 50px;
	max-width: 90%;
	height: auto;
	display: block;
}


.button_back {
	font-family: 'Merriweather', serif;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 1.5px;
	text-decoration: none;
	color: #000080;
	display: inline-block;
	
	border-width: 3px;
	border-color: black;
	border-style: solid;
	border-radius: 45px;
	padding-bottom: 8px;
	padding-top: 8px;
	padding-left: 25px;
	padding-right: 25px;
	
}
.button_back:hover {
	color: #FFF;
	background-color:  #FF4500;
}



/*   +++++++++++++++++++++++++++++++++++++++++


Navigation
++++++++++++++++++++++++++++++++++++++++++++   */

nav {
	margin: auto;
	width: 100%;
	height: 100px;
	text-align: center;
}
.topnav {
	background-color: #FFF;
	font-size: 18px;
	margin-top: 20px;
}
.topnav a{
	color: #000;
	text-align: center;
	padding: 14px; 16px;
	
}
.topnav a:hover{
	border-bottom: 3px solid #000;	
}
.topnav .icon{
	display: none;
}
@media screen and (max-width:800px) {
	.topnav a:not(:first-child) {display: none;
	text-align: left;}
       
.topnav a.icon {
	float: right;
	margin-top: -7px;
	color: black;}
	
nav{
		width: 100%;
		height: 50px;
	}
}