main.event-bg {
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_summer_01.jpg') repeat-y center top;
/*
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_sakura_01.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_valentin_04.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_xmas_01.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_xmas_02.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_xmas_03.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_newyear_01.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_newyear_02.jpg') repeat-y center top;
  background: url('https://smashhighcdn.azureedge.net/shcdn/img/bg_newyear_03.jpg') repeat-y center top;
*/
  background-size: auto;
}