:root {
  --ad-top-height: 50px;
  --ad-bottom-height: 100px;
  --ad-left-width: 300px;
  --ad-right-width: 300px;

  --ad-top-bg-color: #000;
  --ad-bottom-bg-color: #000;
  --ad-left-bg-color: #000;
  --ad-right-bg-color: #000;

  --content-height: calc(100% - var(--ad-top-height) - var(--ad-bottom-height));
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

html,
body {
  background-color: var(--ad-top-bg-color);
  height: 100%;
}

body {
  overflow: hidden;
}

.column {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.row {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: var(--content-height);
}

.row .col {
  flex: 10000 1 0%;
  width: auto;
  max-width: 100%;
  text-align: center;
}

.row .col-auto {
  flex: 0 0 auto;
  width: auto;
  max-width: 100%;
  text-align: center;
}

.content {
  height: 100% !important;
  width: 100% !important;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ad-top {
  position: relative;
  overflow: hidden;
  height: var(--ad-top-height) !important;
  background-color: var(--ad-top-bg-color);
  display: flex;
  justify-content: center;
}
.ad-left {
  position: relative;
  overflow: hidden;
  width: var(--ad-left-width) !important;
  height: 100% !important;
  background-color: var(--ad-left-bg-color);
}
.ad-right {
  position: relative;
  overflow: hidden;
  width: var(--ad-right-width) !important;
  height: 100% !important;
  background-color: var(--ad-right-bg-color);
}
.ad-bottom {
  position: relative;
  overflow: hidden;
  height: var(--ad-bottom-height) !important;
  background-color: var(--ad-bottom-bg-color);
}

.ad-top > div,
.ad-bottom > div,
.ad-left > div,
.ad-right > div {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

@media (max-width: 1200px) {
  .ad-left,
  .ad-right {
    display: none;
  }
}