body{
margin:0;
font-family:Arial;
color:white;
text-align:center;
background-image:url("anniversary.png");
background-size:cover;
background-position:center;
height:100vh;
}

.overlay{
background:rgba(0,0,0,0.55);
height:100vh;
padding-top:40px;
}

h1{
font-size:50px;
}

h2{
font-size:35px;
margin-bottom:20px;
}

.python-box{
background:black;
color:#00ff88;
width:420px;
margin:auto;
padding:20px;
border-radius:10px;
font-family:monospace;
}

.slideshow img{
width:250px;
border-radius:20px;
margin:20px;
box-shadow:0 0 15px rgba(0,0,0,0.4);
}

.message{
font-size:20px;
margin:20px auto;
width:60%;
}

#countdown{
font-size:28px;
margin-top:20px;
}

.heart{
position:fixed;
color:#ff5e9c;
font-size:20px;
animation:float 6s linear infinite;
}

@keyframes float{
0%{transform:translateY(100vh);}
100%{transform:translateY(-10vh);}
}