body{
background:#000;
margin:0;
font-family:Arial, Helvetica, sans-serif;
}

.container{
height:100vh;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
}

.logo{
max-width:700px;
width:80%;
}

.back{
margin-top:40px;
}

.back a{
color:#aa3300;
text-decoration:none;
font-size:14px;
transition:0.3s;
}

.back a:hover{
color:#ff6600;
text-shadow:
0 0 5px #ff4400,
0 0 10px #ff2200,
0 0 20px #ff0000;
}