.main-content {
 display: flex;
  justify-content: center;
  align-items: center;
}

.fb-page {
  border-left: 1px solid #9FC2EE; 
    border-right: 1px solid #9FC2EE; 
}

@media (max-width: 600px) {
    .fb-page{
      width:auto;
    }
}