section {
  margin-top: 60px;
  margin-bottom: 60px;
}

h1,h2 {
  padding: 1em;
}

@media (min-width:576px) {
 .container,
 .container-sm {
  max-width:540px
 }
}
@media (min-width:768px) {
 .container,
 .container-md,
 .container-sm {
  max-width:720px
 }
}
@media (min-width:992px) {
 .container,
 .container-lg,
 .container-md,
 .container-sm {
  max-width:960px
 }
}
@media (min-width:1200px) {
 .container,
 .container-lg,
 .container-md,
 .container-sm,
 .container-xl {
  max-width:720px
 }
}
@media (min-width:1400px) {
 .container,
 .container-lg,
 .container-md,
 .container-sm,
 .container-xl,
 .container-xxl {
  max-width:720px;
 }
}