css adjust width to screen size code example

Example 1: fixed size body html

html {
    position: relative;
    min-width: 1024px;
    min-height: 768px;
    height: 100%;
}
<!-- Remove height 100% if needed fixed height -->

Example 2: width in % of a screen css

1vw = 1% of viewport width
1vh = 1% of viewport height