.contain {
  border: 2px solid;
  margin-left: auto;
  margin-right: auto;
  width: 600px;
  overflow: auto;
  max-width: 100%;
}

header {
  text-align: center;
  border: none;
  border-bottom: 1px solid;

}

footer {
    border-top: solid 1px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
}

ul {
    list-style-type: none;
}

p {
    margin-left: 50px;
    margin-right: 50px;
}