std-section-1280,
std-section-960,
std-section-480 {
  display: block;
}
.std-section-1280,
std-section-1280 {
  width: calc(100% - 40px);
  max-width: 1240px;
  padding: 0px 20px;
  margin-left: auto;
  margin-right: auto;
}
.std-section-960,
std-section-960 {
  width: calc(100% - 40px);
  max-width: 920px;
  padding: 0px 20px;
  margin-left: auto;
  margin-right: auto;
}
.std-section-720,
std-section-720 {
  width: calc(100% - 40px);
  max-width: 720px;
  padding: 0px 20px;
  margin-left: auto;
  margin-right: auto;
}
.std-section-480,
std-section-480 {
  width: calc(100% - 40px);
  max-width: 440px;
  padding: 0px 20px;
  margin-left: auto;
  margin-right: auto;
}