Classe Container com Breakpoints

.container {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
}

/* BREAKPOINT 576px */
@media (min-width: 36em) {
  .container {
    max-width: 540px;
  }
}

/* BREAKPOINT 768px */
@media (min-width: 48em) {
  .container {
    max-width: 720px;
  }
}

/* BREAKPOINT 992px */
@media (min-width: 62em) {
  .container {
    max-width: 960px;
  }
}

/* BREAKPOINT 1200px */
@media (min-width: 75em) {
  .container {
    max-width: 1140px;
  }
}