/* Chỉnh sửa riêng cho trang */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f8ff;
}

/* Thanh menu */
.navbar {
    background-color: #007bff;
}
.navbar a {
    color: white !important;
}

/* Các phần */
.section {
    padding: 50px 15px;
}

/* Xen kẽ màu nền */
.section:nth-child(even) {
    background-color: #ffffff;
}
.section:nth-child(odd) {
    background-color: #e0f0ff;
}

/* Ảnh */
.img-fluid {
    max-height: 300px;
}

/* Footer */
footer {
    background-color: #007bff;
    color: white;
    padding: 20px 0;
}
.navbar {
    background-color: #007bff;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;}
/* Kích thước slider */
* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.slider {
  position: relative;
  width: 100%;
  max-width: 800px;
  height: 400px;
  margin: 50px auto;
  overflow: hidden;
}

.slides {
  display: flex;
  width: 300%; /* 3 trang */
  height: 100%;
  transition: transform 0.5s ease-in-out;
}

* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.slider {
  position: relative;
  width: 100%;
  max-width: 800px;
  height: 400px;
  margin: 50px auto;
  overflow: hidden;
}

.slides {
  display: flex;
  width: 300%; /* 3 trang */
  height: 100%;
  transition: transform 0.5s ease-in-out;
}

.slide {
  width: 100%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5em;
  color: #fff;
}

/* Màu nền cho từng trang */
.slide:nth-child(1) { background-color: #ff6666; }
.slide:nth-child(2) { background-color: #66cc66; }
.slide:nth-child(3) { background-color: #6699cc; }
  .b2{
    text-decoration: none;
  }
  .nav-item{
    /* Đặt phần chứa các phần tử thành hiển thị dạng flex */

    display: flex;
    gap: 10px; /* Khoảng cách giữa các phần tử */
    flex-wrap: nowrap; /* Không cho xuống dòng, tất cả cùng hàng */
    padding: 0;
    list-style-type: none; /* Bỏ ký hiệu list mặc định */
  
  }


.thank-you {
  font-size: 3em;
  font-weight: bold;
  color: #fff;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  background: linear-gradient(45deg, #ff0066, #ffcc00, #33cc33, #0066ff);
  background-size: 600% 600%;
  padding: 20px 40px;
  border-radius: 15px;
  animation: gradientShift 10s ease infinite, pulse 2s infinite;
  text-align: center;
}

.content {
  text-align: center;
}

.reaction-area {
  position: relative;
  display: inline-block;
  margin-top: 20px;
}

.reaction-btn {
  background-color: #1877f2;
  color: #d9ff00;
  padding: 10px 20px;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  font-size: 1em;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background-color 0.3s;
}

.reaction-btn:hover {
  background-color: #16b0cb;
}

#reactionOptions {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  background: #c83131;
  padding: 8px;
  border-radius: 50px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  animation: fadeIn 0.3s ease;
}
.reaction-container:hover #reactionOptions {
  display: flex;
}
#reactionOptions i {
  font-size: 1.5em;
  cursor: pointer;
  transition: transform 0.2s;
}

#reactionOptions i:hover {
  transform: scale(1.2);
  color: #ff00ff;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.content {
  text-align: center;
}