body {
  background-color: #f2f2f2;
  
}

.header {
  background-color: rgb(0, 0, 0);
  color: white;
  display: flex;
  padding: 10px 20px;
  align-items: center; /* làm các item trong div thẳng hàng*/
  border-radius: 15px;
  justify-content: space-between;
  font-size: 18px;
  
}

.header .user {
  background-color: #2ecc71;
  border-radius: 4px;
  padding: 5px 10px;
  font-size: 16px;
}

.container {
  border-radius: 4px;
  border: 1px solid rgb(206, 204, 204);
  background: #fff;
  width: 80%;
  margin: 30px auto;
  padding: 25px;
 
}

h1 {
  margin-top: 0;
}

button {
  background: #2ecc71;
  color: white;
  border: none;
  border-radius: 3px;
  padding: 6px 15px;
  cursor: pointer;
  width: auto;
}

button:hover{
    background-color: #26a95c;
}

.upload {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

ul li{
    margin-bottom: 10px;
    font-size: 17px;
}

ul{
    padding-left: 20px;
}