body{
background:#ffffff;
color:rgb(0, 0, 0);
font-family:Arial;
text-align:center;
margin:0;
}

header{
padding:30px;
background:#000000;
box-shadow:0 0 20px #00f7ff;
}

h1{
color:#00ffff;
font-size:40px;
text-shadow:0 0 15px #00f7ff;
}
 
h3{
color:#ffffff;
font-size:20px; 
text-shadow:1 1 10px #00ffff;
}

nav{
background:#ffffff;
padding:15px;
}

nav a{
color:rgb(0, 0, 0);
margin:10px;
text-decoration:none;
font-size:18px;
}

nav a:hover{
color:#00f7ff;
}

section{
padding:40px;
}

button{
background:#00f7ff;
color:black;
padding:15px 30px;
font-size:18px;
border:none;
border-radius:6px;
cursor:pointer;
box-shadow:0 0 10px #00f7ff;
}

button:hover{
background:#00c8cc;
}

footer{
background:#ffffff;
padding:20px;
margin-top:40px;
}