<style>
        body{
            background-color: rgb(255, 255, 255);
        }
        a{
            text-decoration: none;
        }
        #container{
            min-height: 500px;
            margin: auto;
             }
        #menu{
           background-color:rgb(44, 42, 42) ;
           min-height: 70px;
        }
        #header{
            background-color: rgb(44, 42, 42);
            min-height: 300px;
        }
        #content{
            background-color: rgb(240, 198, 69);
            min-height: 1500px;
            padding: 50px;
            color:rgb(249, 246, 246);
            font-family: Arial, Helvetica, sans-serif;
        }
        li{
            display: inline-block;
            width: 130px;
            font-weight: bold;
            color: rgb(255, 255, 255);
        }
        li:hover{
            transform: scale(0.8);
            transition: transform 0.3s ease;
        }
        #content .dataitems .item{
            width: 1100px;
            height: 300px;
            background-color: rgb(171, 49, 49);
            margin: 10px;
            padding: 20px;
            display: flex;
        }
        #header .banner img{
            width: 100%;
        }
        .submit-tbn{
            background-color: rgb(213, 128, 24);
            width: 180px;
            height: 50px;
            border-radius: 20px;
            font-size: 20px;
            font-family: Arial, Helvetica, sans-serif;
            color: white;
        }

        .submit-tbn:hover{
            transform: scale(-0,2px);
            box-shadow: 0 3px 7px;
        }
        #footer{
            padding: 50px;
            background-color: rgb(44, 42, 42);
            color: white;
            font-family: Arial, Helvetica, sans-serif;
            max-height: 500px;
        }
        .footer-main {
            padding: 30px 20px;
            color: white;
        }
        
        .footer-columns {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-column h3 {
            color: #ffbc0d;
            margin-bottom: 15px;
            font-size: 20px;
            border-bottom: 1px solid #444;
            padding-bottom: 8px;
        }
        .footer-column li{
            width: 300px;
            padding-bottom: 10px;
            display: flex;
            transform: none;
        }
        .language-selector select {
            background-color: #333;
            color: white;
            border: 1px solid #555;
            padding: 5px 10px;
            border-radius: 4px;
        }
        i{
            margin-right: 10px;
            font-size: 28px;
        }
    /**/
    .contact-form {
    width: 420px;
    background: #fff;
    margin: 40px auto;
    padding: 25px;
    border-radius: 18px;            /* Bo góc khung */
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.contact-form h2 {
    text-align: center;
    margin-bottom: 18px;
}

.form-group {
    margin-bottom: 14px;
}

label {
    font-weight: bold;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 10px;            /* Bo góc hộp nhập */
    font-size: 14px;
    transition: 0.2s;
}

input:focus, textarea:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 5px rgba(0,123,255,0.3);
}

button {
    width: 100%;
    padding: 12px;
    background: #ff7b00;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 14px;            /* Bo góc nút */
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #e86f00;
}

/* Thông báo khi submit */

.form-container { 
            max-width: 600px; 
            margin: 0 auto; 
            background: #ffffff; 
            color: #000; 
            padding: 40px; 
            border-radius: 20px; 
            box-shadow: 0 15px 35px rgba(255, 107, 53, 0.4);
            border: 8px solid #ff6b35;
            transition: all 0.4s;
        }
        h2 { 
            text-align: center; 
            color: #ff6b35; 
            font-size: 32px; 
            margin-bottom: 10px;
            text-shadow: 2px 2px 0px #ffc338;
        }
        .subtitle { text-align: center; color: #d11241; font-size: 18px; margin-bottom: 30px; }
        label { font-weight: bold; margin-top: 20px; display: block; color: #d11241; font-size: 16px; }
        input, textarea { 
            width: 100%; padding: 14px; margin-top: 8px; border: 3px solid #ffc338; 
            border-radius: 12px; font-size: 16px; box-sizing: border-box; background: #fffef0;
        }
        input:focus, textarea:focus { outline: none; border-color: #ff6b35; box-shadow: 0 0 0 4px #ffc33855; }
        textarea { height: 200px; resize: vertical; }
        button { 
            margin-top: 30px; padding: 18px; background: #d11241; color: white; border: none; 
            border-radius: 50px; font-size: 20px; font-weight: bold; cursor: pointer; width: 100%; 
            box-shadow: 0 8px 0 #9c0f2e; transition: all 0.2s;
        }
        button:hover { background: #e91e47; transform: translateY(-3px); box-shadow: 0 12px 0 #b01038; }
        .note { font-size: 14px; color: #666; text-align: center; margin-top: 25px; }

        /* Phần thông báo cảm ơn */
        .thank-you {
            display: none;
            text-align: center;
            padding: 40px 20px;
        }
        .thank-you h2 {
            color: #ffc338;
            text-shadow: 2px 2px 0px #d11241;
            font-size: 36px;
        }
        .thank-you p {
            font-size: 18px;
            line-height: 1.6;
            margin: 20px 0;
        }
        .thank-you .emoji {
            font-size: 80px;
            margin: 20px 0;
        }
/* Khuến mãi */
/* ====================== CHỈ CSS CHO #content ====================== */


/* Wrapper căn giữa trang */
.promotion-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* Mỗi khối khuyến mãi */
.promotion-item {
    display: flex;
    align-items: center;
    background: #fff;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
    transition: all 0.4s ease;
}

/* Ảnh bên trái */
.promotion-image {
    flex: 0 0 480px;
    overflow: hidden;
}

.promotion-image img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

/* Phần chữ bên phải */
.promotion-text {
    flex: 1;
    padding: 40px 50px;
    background: #ffc338;           /* vàng McDonald’s */
    color: #d11241;
    transition: background 0.45s ease;
}

.promotion-text h3 {
    margin: 0 0 14px 0;
    font-size: 30px;
    font-weight: bold;
    color: #d11241;
}

.promotion-text p {
    margin: 12px 0 20px;
    font-size: 19px;
    line-height: 1.5;
    color: #333;
}

.valid-date {
    display: block;
    font-weight: bold;
    font-size: 16px;
    color: #d11241;
}

/* Hiệu ứng hover  */
.promotion-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 25px 50px rgba(255, 107, 53, 0.3);
}

.promotion-item:hover .promotion-image img {
    transform: scale(0.9);
}

.promotion-item:hover .promotion-text {
    background: #d11241;           /* đổi sang đỏ khi hover */
    color: white;
}

.promotion-item:hover .promotion-text p,
.promotion-item:hover .valid-date {
    color: #fff;
}
/* TD */
.promotion-text h3 {
    transition: color 0.4s ease;
}

.promotion-item:hover .promotion-text h3 {
    color: white;
}

/*  Responsive  */
@media (max-width: 992px) {
    .promotion-item {
        flex-direction: column;
    }
    .promotion-image {
        flex: none;
        width: 100%;
    }
    .promotion-image img {
        height: 280px;
    }
    .promotion-text {
        padding: 35px;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .promotion-text {
        padding: 25px;
    }
    .promotion-text h3 {
        font-size: 24px;
    }
    .promotion-image img {
        height: 220px;
    }
}