body {
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(to bottom right, #e3f2fd, #ffffff);
  color: #333;
  margin: 0;
  padding: 0;
}
 
header {
  text-align: center;
  font-size: 1.8em;
  font-weight: bold;
  padding: 25px;
  background-color: #1565c0;
  color: white;
}
.nav-flex {
  list-style: none;
  display: flex;
  justify-content: center;
  background-color: #1976d2;
  padding: 0;
  margin: 0;
  gap: 20px;

}
.nav-flex li a {
  display: block;
  color: white;
  text-decoration: none;
  padding: 10px 15px;
  transition: background-color 0.3s ease;
}
.nav-flex li a:hover {
  background-color: #0d47a1;
}
nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  background-color: #1976d2;
}
 
nav ul li {
  margin: 0 15px;
}
 
nav ul li a {
  text-decoration: none;
  color: white;
  padding: 10px 15px;
  display: block;
  transition: background-color 0.3s ease;
}
 
nav ul li a:hover {
  background-color: #0d47a1;
}
.main-flex {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}
main section {
  width: 45%;
  margin: 30px auto;
  padding: 20px;
  max-width: 800px;
  background-color: #ffffff;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-shadow: 2px 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}
 
main section:hover {
  transform: scale(1.02);
}
 
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}
 
th, td {
  border: 1px solid #999;
  padding: 12px;
  text-align: center;
}
 
thead {
  background-color: #1565c0;
  color: white;
}
 
tfoot {
  background-color: #eeeeee;
}
.form-flex {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
input[type="text"],
input[type="email"],
textarea {
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  transition: border-color 0.3s ease;
}
input:focus,
textarea:focus {
  border-color: #1565c0;
}
input [type="submit"] {
  background-color: #1976d2;
  color: white;
  border: none;
  padding: 10px;
  border-radius: 4px;               
  font-size: 1em;
  cursor: pointer;
  transition: background-color 0.3s ease;
}
input[type="submit"]:hover {
  background-color: #0d47a1;
}
footer {
  font-size: 0.9em;
  text-align: center;
  padding: 15px;
  background-color: #263238;
  color: white;
  margin-top: 40px;
}
@media screen and (max-width: 600px) {
  .main-flex {
    flex-direction: column;
  }
}
@media screen and (min-width: 601px) and (max-width: 1024px) {
  .main-flex {
    flex-direction: column;
  }
}
@media screen and (min-width: 1025px) {
  .main-flex {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}