*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Segoe UI,sans-serif;
}

body{
background:#f5f7fa;
}

header{
background:#081f4d;
padding:15px 8%;
display:flex;
justify-content:space-between;
align-items:center;
position:fixed;
top:0;
width:100%;
z-index:1000;
}

.logo img{
height:60px;
width:auto;
}

nav a{
color:white;
text-decoration:none;
margin-left:20px;
font-weight:500;
}

nav a:hover{
color:#ff9800;
}

.hero{
height:100vh;
background:
linear-gradient(rgba(0,0,0,.6),rgba(0,0,0,.6)),
url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d');
background-size:cover;
background-position:center;
display:flex;
justify-content:center;
align-items:center;
text-align:center;
color:white;
}

.hero-content h1{
font-size:60px;
margin-bottom:20px;
}

.hero-content p{
font-size:22px;
margin-bottom:30px;
}

.btn1{
background:#ff9800;
padding:15px 30px;
color:white;
text-decoration:none;
border-radius:8px;
margin-right:10px;
}

.btn2{
background:white;
padding:15px 30px;
color:#081f4d;
text-decoration:none;
border-radius:8px;
}

.features{
padding:80px 8%;
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:25px;
}

.card{
background:white;
padding:30px;
text-align:center;
border-radius:12px;
box-shadow:0 5px 20px rgba(0,0,0,.1);
}

.card i{
font-size:40px;
color:#ff9800;
margin-bottom:15px;
}

.about-section{
padding:80px 10%;
text-align:center;
background:white;
}

.about-section h2{
font-size:40px;
margin-bottom:20px;
color:#081f4d;
}

.about-section p{
font-size:18px;
line-height:30px;
}

.counter{
background:#081f4d;
color:white;
padding:70px;
display:flex;
justify-content:space-around;
text-align:center;
}

.counter h2{
font-size:40px;
}

footer{
background:#06152f;
color:white;
padding:40px;
text-align:center;
line-height:35px;
}

@media(max-width:768px){

header{
flex-direction:column;
}

nav{
margin-top:15px;
}

.hero-content h1{
font-size:35px;
}

.counter{
flex-direction:column;
gap:30px;
}

}
input,textarea{

width:350px;
padding:12px;
border:1px solid #ccc;
border-radius:6px;

}

button{

background:#ff9800;
color:white;
border:none;
padding:12px 25px;
border-radius:6px;
cursor:pointer;

}

button:hover{

background:#e67e00;

}
Purana CSS
...
...
@media(max-width:768px){

header{
flex-direction:column;
}

nav{
margin-top:15px;
}

.hero-content h1{
font-size:35px;
}

.counter{
flex-direction:column;
gap:30px;
}

}

/* Iske niche naya CSS paste karo */

.track-bg,
.contact-bg,
.service-bg{
...
}