php - Html attribute with echo -


i have next html element:

<div class="bar bar-success" style="width: 20%;"><? echo $pass; ?></div>

now, want width element changed according echo element .

i try next:

 <div class="bar bar-success" style=<? echo $pass; ?>/<? echo $fail; ?>%;><? echo $pass; ?></div>

but doesn't work. how can it?

this might help....

<div class="bar bar-success" style="width: <?php echo round($pass/$fail); ?>%"><?php echo $pass; ?></div>

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