width: 150px
width: 20em
width: 20em content-box
width: 20em border-box
width: 150px
width: 20em
width: 20em content-box
width: 20em border-box
width: 75%
width: 75% content-box
width: 75% border-box
width: auto
width: max-content
width: min-content
width: available
width: fit-content