nav li{
	float : left;
}
nav ul::after{
	content:"";
	display: table;
	clear: both;
}
nav li {
	float: left;
	width: 25%;
	text-align: center;
}
nav{
	width: 100%;
	margin: 0 auto;
}
nav a{
	display: block;
	text-decoration: none;
	color: black;
}
nav a:hover{
color: blue;
border-bottom: 2px solid gold;
}
nav a{
	display: block;
	text-decoration: none;
	color: black;
	border-bottom: 2px solid transparent;
	padding: 10px 0px
}
nav a:hover{
	color:orange;
	border-bottom: 2px solid gold;

}
nav{
	width:100%;
	margin:0 auto;
	background-color: white;
	position: sticky;
	top: 0px;
}
 h2 {
 color:#0816E8 ;
 text-decoration: underline white :
 }
 h1{
	 color:#9E0AF8;
	 background-color :#F9F9FC ;
 }
 .first {
 font-weight: bold;
}
img {
width: 400px;
height: 300px;
}
.done {
 text-decoration: line-through;
}
.mot {
 color:#000108  ;
 background-color :#000108  ;
 
}

 p {
 color:#000108 ;
 background-color:#FEFEFE  ;
 border: 1px solid white;
 }