Frames/template/css/frames.css

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

:root {
  --grid-cols: 1;
  --grid-rows: 1;
}

body {
  width: 100vw;
  height: 100vh;
}

#container {
  display: grid;
  /*grid-template-rows: repeat(var(--grid-rows), 1fr); not working in Firefox*/
  grid-auto-rows: calc(100vh/var(--grid-rows));
  grid-auto-columns: calc(100vw/var(--grid-cols));
  grid-template-columns: repeat(var(--grid-cols), 1fr);
  overflow: hidden;
  width: 100%;
  height: 100%;
}

.grid-item {
  border: none;
  background-color: #fff;
  text-align: center;
}

.grid-item-invis{
  border: none;
  text-align: center;
  width: 0px;
  height: 0px;
  background-color: #fff;
}

.formbutton{
  position: relative;
  bottom: 4.8em;
  right: 0.8em;
  z-index: 9;
  padding: 1em;
  float: right;
}