html - bootstrap 3 - crop image to fit width & height -


i'm using span, i'm filling background make sure images same size in browsers. while have no complaints this, i'm missing opportunity use alt tag , potential seo advantage might carry.

is there way crop image using html+css (no js) using img tag?

if seo image important perhaps can include image relevant alt, style="display: none". crawlers may smart enough rule out though..!


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