Answers for "how to center a div in page with css"

center a div in css

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

how to put container in center of page

#container
{
    width: 400px;
    margin-left: auto;
    margin-right: auto;
}

css align center

.center {
  margin: auto;
  width: 50%;
  border: 3px solid green;
  padding: 10px;
}