/* RESET */
*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
font-family:Arial, sans-serif;
background:#f4f6f9;
color:#333;
}

/* HEADER */
.header{
background:#0d6efd;
color:white;
text-align:center;
padding:40px 20px;
}

.header h1{
font-size:28px;
}

/* CONTAINER */
.container{
max-width:1100px;
margin:auto;
padding:20px;
}

/* GRID LAYOUT */
.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
gap:20px;
}

/* CARD */
.card{
background:white;
padding:25px;
border-radius:14px;
box-shadow:0 6px 18px rgba(0,0,0,0.08);
text-align:center;
transition:.3s;
}

.card:hover{
transform:translateY(-5px);
}

/* BUTTON */
.btn{
display:inline-block;
background:#0d6efd;
color:white;
padding:12px 22px;
border-radius:8px;
text-decoration:none;
font-weight:bold;
margin-top:15px;
}

.btn:hover{
background:#084298;
}

/* DETAILS */
.details{
text-align:left;
margin-top:15px;
line-height:1.7;
}

/* FOOTER */
.footer{
text-align:center;
padding:25px;
color:#777;
}

/* TABLET */
@media (max-width:992px){
.header h1{
font-size:24px;
}
}

/* MOBILE */
@media (max-width:600px){

.header{
padding:30px 15px;
}

.header h1{
font-size:22px;
}

.card{
padding:20px;
}

.btn{
width:100%;
}
}