PCv5/app/static/css/container.css

.container {
  margin-left: 110px;
}
@media screen and (max-width:849px) {
  .container {
    margin-left: 0;
  }
}
section {
  width: 80%;
  margin: 20px auto 0 auto;
}
@media screen and (max-width:1449px) {
  section {
    width: 90%;
  }
}
@media screen and (max-width:1199px) {
  section {
    width: 95%;
  }
}