header {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	background-color: #333;
	z-index: 1000;
    }

.container {
    width: 80%;
    margin: 0 auto;
    overflow: hidden;
}
h1 {
	color : white;
}
p {
	margin:0
}
li {
	font-size : 18px
}
nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    }

nav ul li {
    float: left;
}

nav ul li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav ul li a:hover {
    background-color: #555;
}
main {
    margin-top: 150px;
}
#timer {
    font-size: 24px;
    text-align: center;
}
.online {
    color: green;
}
.offline {
    color: red;
}