<!DOCTYPE html>
<html>
<head>
<style>
.grid-item1 { grid-area: header; }
.grid-item2 { grid-area: left-menu; }
.grid-item3 { grid-area: main-content; }
.grid-item4 { grid-area: right-ad; }
.grid-item5 { grid-area: footer; }
.grid-container {
display: grid;
grid-gap: 10px;
grid-template-areas:
'header header header header header header'
'left-menu main-content main-content main-content right-ad right-ad'
'left-menu footer footer footer footer footer';
background-color: blue;
padding: 10px;
}
.grid-container > div {
background-color: lightblue;
border: 1px solid;
padding: 15px;
}
</style>
</head>
<body>
<div class="grid-container">
<div class="grid-item1">header</div>
<div class="grid-item2">left menu</div>
<div class="grid-item3">main content</div>
<div class="grid-item4">right ad</div>
<div class="grid-item5">footer</div>
</div>
</body>
</html>
