body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  padding: 20px;
  background-color: #fafafa;
}

.flex-container {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.flex-container > div {
  background-color: #f1f1f1;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 8px;
  flex: 1;
  min-width: 300px;
}

.article1 {
  padding: 20px;  
}

.article1 img {
  width: 100%;
}

.article1 p,
.article1 h2 {
  text-align: left;
}

.article2 img,
.article3 img {
  max-width: 100%;
  height: auto;
}

.header {
  text-align: center;
  margin-bottom: 40px;
}

footer {
   position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  padding: 10px;
  background-color: #f2f2f2;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  font-size: 16px;
  margin-top: 16px;
  text-decoration: none;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  background-color: grey;
  color: black;
  font-weight: bold;
}

.btn:hover {
  background-color: #0056b3;
  color: white;
  font-weight: bold;
 
}