html - Viewport vs Percentage -

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i using percentage when creating responsive designs , haven't used viewports yet. know when use viewport , when use percentage because looks similar me.

fiddle example

html

<div class="percent">hello world</div> <br/> <div class="viewport">hello world</div>

css

div.percent{     width:100%;     background-color:#09c;     color:white; } div.viewport{     width:100vw;     background-color:#09c;     color:white; }

percentages based on parent containers, viewport units consistent viewport.

if have percentage on direct child of body they're off, since body has default margin.


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