gioithieu.css

  *{
    margin: 0;
    padding: 0;
}

body{
    background-size: cover;
    background-position-y:-100px ;
}
.container{
    max-width: 960px;
    margin: 0px auto;
}
.headerr{
    background-color: white;
  }
  .container{
    display: flex;
    list-style: none;
  
  }
  #logo{
  max-width: 100px;
  height: auto;
  padding-left: 10px;
  color: black;
  background-color: white;
  margin-top: 18px;
  }
  .menu{
    display: flex;
    list-style: none;
    margin: 0px;
    padding: 0px;
    margin-right: 10px;    
  }
  .menu li a{
    color: black;
    background-color: white;
    display: block;
    padding: 18px 20px;
    text-decoration: none;
  }
  .banner{
    width: 100%;
    height: 400px;
    
  }
main {
    display: flex;
    justify-content: center;
    /* align-items: center; */
    margin: 0;
    padding: 0;
    margin-top: 60px;
}
main div h2{
    margin-top: -60px;
    padding: 20px;
}
main .content{
    max-width: 550px;
    text-align: justify;
    font-size: 17px;
}
.img1 img{
    padding: 20px;
    margin-top: 100px;
    height: 300px;
    width: 300px;

}
section {
  display: flex; /* Sử dụng Flexbox để căn giữa nội dung */
  justify-content: center;
  align-items: center;
  min-height: 100vh; /* Thiết lập chiều cao tối thiểu bằng chiều cao của màn hình */
  margin: 0;
  padding: 0;
  text-align: center;
  margin-left: 100px;
  margin-right: 30px;
}

div h2 p {
  text-align: center;
}

section .content2 {
  max-width: 550px;
  text-align: justify;
  font-size: 17px;
  margin-left: -100px;
  padding: 0;
  margin-top: -370px;
}

.img2 img {
  height: 300px;
  width: 300px;
  margin-top: -400px;
  margin-left: 20px;
}

footer{
    background-color: #edeceb;
   height: 240px;
   margin-top: -290px;
  }
  .extend-f {
    column-count: 3;
    margin-top: 10px;
    margin-left: 330px;
    margin-right: 300px;
    padding: 10px;
  }
  
  .footnav1 {
    margin-top: -30x;
    width: 300px;
  }
  
  ul li {
    list-style-type: none;
   
  }
  
  ul li a {
    text-decoration: none;
    color: #ab8e5d;
  }
  
  h3 {
    color: #874435;
  }
  
  .root-f {
    text-align: center;
    color: #ab8e5d;
    margin-top:10px;
  }
  footer img{
    height: 40px;
    width: 40px;
    padding-top: 30px;
    padding: 25px;
    float: left;
  
  }