*{
	margin:0;
	padding:0;
	font-family: Callibri;
}

header{
	background-image:linear-gradient(rgba(0,0,0,0.5),rgba(0,0,0,0.5)), url("view.jpg"); 	/* ta gradient to skotiniazoun san fonto */
	height: 100vh; 																			/* vh=viewport height=pianei olo to xwro aotou pou vlepw gia timh 100*/
	background-size: cover;
	background-position: 90% 90%;
}

.main ul{
	list-style-type: none;
	float:right;
	margin-top:25px;
	margin-right:10px;
}

.main ul li{
	display: inline-block;
}

.main ul li a{
	text-decoration: none;
	color: white;
	padding: 5px 20px;
	border: 2px solid transparent;
	transition: 300ms ease-out;
}

.main li.active a{
	background-color: white;
	color: black;
}

.main li a:hover{
	background-color: white;
	color: black;
}

.main{
	margin:auto;
}

.contact {
	text-align:center;
	position: absolute;
	top:25%;
	left:50%;
	transform: translate(-50%,-50%);
	color: white;
	
}

.form{
	margin-top:20px;
	text-align:center;
	position: absolute;
	top:55%;
	left:50%;
	transform: translate(-50%,-50%);
	color: white;
	font-size:130%;
}

.form-control{
	width:500px;
	background:transparent;
	border:none;
	outline:none;
	border-bottom: 1px solid gray;
	color:white;
}

input{
	height:30px;
}

form .submit{
	background:grey;
	color:white;
	font-size:20px;
	font-weight:bold;
	letter-spacing:1px;
	height:35px;
}

form .submit:hover{
	background-color:#8A939A;
	cursor:pointer;
}

form .submit:active {
	color: #3F4A4D;									/* οταν το πατησω */
}