body {
  background: url(../../img/split_bg.png) #FFF repeat-y 50% 0px;
}

.split_page {
  display: flex;
  flex-flow: row;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
}

.split_page > .split_page_left {
  flex-basis: 45%;
  align-content: center;
}

.split_page > .split_page_right {
  flex-basis: 55%;
  align-content: center;
  background: #214496;
}