body{
background-color: grey;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
margin:0;
padding:0;
}
header{
background-color:black;
color:white;
padding:15px;
text-align: center;
}
nav{
background-color: black;
color:white;
overflow:hidden;
}
a{
    color: white;
}
h1{
color:white;
}
p{
color:white;
line-height: 1.6;
}