body {
  margin: 0;
  padding: 0;
}

header {
  background-color: #f1be25;
  padding: 15px 0;
}

nav ul {
  display: flex;              /* Dùng flexbox */
  align-items: center;        /* Canh giữa icon với chữ theo trục dọc */
  list-style: none;
  margin: 0;
  justify-content: space-around;
  position: relative;
  height: 30px;
}

nav li {
  margin: 0 15px;             /* khoảng cách giữa các mục */
  font-family: Calibri;
  font-weight: 300;
  font-size: 18px;
  border: solid 1px #ffffff;
  border-radius: 5%;
  padding: 3px;
}
nav li.home {
  position: absolute;
  left: 0;
  border: none;
} 

nav a {
  text-decoration: none;
  color: #ffffff;
  transition: 0.5s;
}

nav a:hover {
  text-decoration: none;
  color: #f1be25;
  background-color: #ffffff;

}


main {
  padding-bottom: 100px;
}
main img {
  display: flex;
  width: 100%;
  height: 100%;
}

main section {
  padding-left: 85px;
  padding-top: 40px;
  font-family: Calibri;
  font-weight: 200;
}

main h2 {
  padding-top: 10px;
}
main section img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border: 4px solid #ffffff;
    margin: 0px;
    border-radius: 4%;
    opacity: 60%;
    background: #ffffff;
    transition: opacity 0.2s linear, tranform 1s linear;
    transition-delay: .5s;
}

main section img:hover {
    transform: scale(1.1, 1.1);
    opacity: 100%;
}

figure {
    padding: 0;
    margin: 0;
}

figure figcaption {
    text-align: center;
}

.image-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 0px;
}


footer {
  text-align: center;
  padding-top: 20px;
  padding-bottom: 50px;
  background-color: #f1be25;
}