css - i want to give padding in pixels and fix width in percentage -

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outer div hold thumbnails contains padding: 20px 40px 0px 40px. want fix width in percentage responsive layout. if width not specified, there empty space on right side.can me, how calculate width in '%' if padding there in px.

try to box-sizing

div{ padding: 20px 40px 0px 40px; -webkit-box-sizing:border-box; -moz-box-sizing:border-box; box-sizing:border-box; }

more box-sizing


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