set div height according to screen resolution css code example
Example 1: css window height
body, html {
height: 100%;
}
#right {
height: 100%;
}
Example 2: css window height
.left {
height: 100vh;
width: 50%;
background-color: grey;
float: left;
}
.right {
height: 100vh;
width: 50%;
background-color: red;
float: right;
}