/* css/styles.css */
body {
  margin: 0, 130px;
  font-family: Arial, sans-serif;
  background-color: #f4f7f6;
  color: #333;
}

header {
  background-color: #2f4f4f;
  color: #fff;
  padding: 10px 20px;
  width: 100%;
  position: fixed;
  top: 0;
  z-index: 1;
}

.menu ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.menu li {
  margin-right: 20px;
}

.menu a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.main, main {
  padding: 20px;
}

.welcome {
  text-align: center;
  padding: 50px 20px;
}

.btn {
  background-color: #4f7942;
  color: #fff;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  text-decoration: none;
  border-radius: 4px;
}

.btn:hover {
  background-color: #3e6f32;
}

footer {
  background-color: #2f4f4f;
  color: #fff;
  text-align: center;
  padding: 10px;
  position: fixed;
  bottom: 0;
  width: 100%;
}

first div {
  
  margin: 200px;
}

last div {
  
  margin: 200px;
  background-color: #f4f7f6;
}

/* Адаптивная верстка */
@media (max-width: 768px) {
  .menu ul {
    flex-direction: column;
    align-items: center;
  }
  
  header {
    position: static;
  }
  
  footer {
    position: static;
  }
}

/* Стили для таблиц */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

th, td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: left;
}