.flex_test {  
	display: grid;
  	grid-template-areas:
    "header header"
    "sidebar content"
    "footer footer";
  	grid-template-columns: 1fr 1fr;
  	/*grid-gap: 10px;*/
	/*position:relative;*/
	text-align: left;
	background:white;
}

.grid-item {
  padding: 10px;
}

.header {
  grid-area: header;
}

.sidebar {
  grid-area: sidebar;
}

.content {
  grid-area: content;
}

.footer {
  grid-area: footer;
}