body {
  background-image: url('bg.jpg');
}

.navbar {
  background-color: #3c4b61;
  opacity: 100%
}

.main_content {
  /* background-image: url('bg.jpg'); */
  flex: 1;
  color: #3c4b61;
}

.btn {
  background-color: #3c4b61;
  color: white
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  
}

.footer {
  background-color: #3c4b61;
  color: white;
  padding: 10px 0;
  text-align: center;
}