body{
    margin:0;
    font-family: Arial, Helvetica, sans-serif;
    background:#fff5f5;
}

/* HEADER */
header{
    background:#b30000;
    color:white;
    text-align:center;
    padding:20px;
}

/* MENU */
nav{
    background:#cc0000;
    text-align:center;
    padding:12px;
}

nav a{
    color:white;
    text-decoration:none;
    margin:0 15px;
    font-weight:bold;
}

nav a:hover{
    color:yellow;
}

/* HERO */
.hero{
    background:url("https://cdn.vntrip.vn/cam-nang/wp-content/uploads/2017/10/ben-ninh-kieu-can-tho.jpg");
    background-size:cover;
    background-position:center;
    height:400px;
    display:flex;
    justify-content:center;
    align-items:center;
    color:white;
    font-size:40px;
    font-weight:bold;
    text-shadow:2px 2px 5px black;
}

/* CONTAINER */
.container{
    width:90%;
    margin:auto;
    padding:20px 0;
}

/* TITLE */
.section-title{
    color:#b30000;
    border-bottom:3px solid #b30000;
    display:inline-block;
    padding-bottom:5px;
    margin-top:30px;
}

/* CARD */
.card{
    background:#f2f2f2;
    padding:20px;
    margin:20px 0;
    border-radius:10px;
}

/* GRID */
.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

/* IMAGE */
img{
    width:100%;
    border-radius:10px;
}

/* BUTTON */
.btn{
    display:inline-block;
    margin-top:10px;
    padding:8px 18px;
    background:#cc0000;
    color:white;
    text-decoration:none;
    border-radius:5px;
}

.btn:hover{
    background:#990000;
}

/* FOOTER */
footer{
    background:#b30000;
    color:white;
    text-align:center;
    padding:15px;
    margin-top:30px;
}
.card img{
    width: 200px;      /* chỉnh nhỏ lại */
    height: auto;      /* giữ đúng tỉ lệ */
    display: block;
    margin: 0 auto;    /* căn giữa ảnh */
}
input, textarea {
    width: 100%;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
}

button {
    padding: 8px 15px;
    background-color: #c62828;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background-color: #a31515;
}