Ensuring Equal Padding on Both Sides of a Div by Setting its Width

In search of a div that houses multiple inner divs with equal padding on the left and right edges. This is crucial for maintaining a fluid layout where the distance between the inner divs and outer div border remains consistent even when the window size changes.

I've considered using jQuery to achieve this, but none of the solutions I've found seem to work. In the provided layout, resizing the window causes the rightmost blue divs to drop down, leaving a significant gap on the right side within the green border. My goal is to align the divs while keeping them left-aligned, especially for the bottom row.

Any suggestions or ideas?

Here's an example:

<style type="text/css" >
 #container {border:5px solid red;padding:2%;text-align:center;}
 .inner {margin:0 auto;padding:10px;border:5px solid green;display:inline-block;
 text-align:left;}
 .item {width:250px;height:250px;margin:5px;border:1px solid blue;display:inline-block;}
</style>

<div id="container">
 <div class="inner">
  <div class="item">ITEM 1</div>
  <div class="item">ITEM 2</div>
  <div class="item">ITEM 3</div>
  <div class="item">ITEM 4</div>
  <div class="item">ITEM 5</div>
  <div class="item">ITEM 6</div>
  <div class="item">ITEM 7</div>
  <div class="item">ITEM 8</div>
 </div>
</div>

Answer №1

If you're open to using some jQuery, the Masonry script can handle this quite well:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8>
<style>

#container {border:5px solid red;padding:2%;text-align:center;}
 .inner {margin:0 auto;padding:10px;border:5px solid green;display:inline-block;
 text-align:left;}
 .item {width:250px;height:250px;margin:5px;border:1px solid blue;display:inline-block;}

</style>
</head>
<body>

<div id="container">
 <div class="inner">
  <div class="item">ITEM 1</div>
  <div class="item">ITEM 2</div>
  <div class="item">ITEM 3</div>
  <div class="item">ITEM 4</div>
  <div class="item">ITEM 5</div>
  <div class="item">ITEM 6</div>
  <div class="item">ITEM 7</div>
  <div class="item">ITEM 8</div>
 </div>
</div>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
/**
 * jQuery Masonry v2.1.08
 * A dynamic layout plugin for jQuery
 * The flip-side of CSS Floats
 * http://masonry.desandro.com
 *
 * Licensed under the MIT license.
 * Copyright 2012 David DeSandro
 */
(function(e,t,n){"use strict";var r=t.event,i;r.special.smartresize={setup:function(){t(this).bind("resize",r.special.smartresize.handler)},teardown:function(){t(this).unbind("resize",r.special.smartresize.handler)},handler:function(e,t){var n=this,s=arguments;e.type="smartresize",i&&clearTimeout(i),i=setTimeout(function(){r.dispatch.apply(n,s)},t==="execAsap"?0:100)}},t.fn.smartresize=function(e){return e?this.bind("smartresize",e):this.trigger("smartresize",["execAsap"])},t.Mason=function(e,n){this.element=t(n),this._create(e),this._init()},t.Mason.settings={isResizable:!0,isAnimated:!1,animationOptions:{queue:!1,duration:500},gutterWidth:0,isRTL:!1,isFitWidth:!1,containerStyle:{position:"relative"}},t.Mason.prototype={_filterFindBricks:function(e){var t=this.options.itemSelector;return t?e.filter(t).add(e.find(t)):e},_getBricks:function(e){var t=this._filterFindBricks(e).css({position:"absolute"}).addClass("masonry-brick");return t},_create:function(n){this.options=t.extend(!0,{},t.Mason.settings,n),this.styleQueue=[];var r=this.element[0].style;this.originalStyle={height:r.height||""};var i=this.options.containerStyle;for(var s in i)this.originalStyle[s]=r[s]||"";this.element.css(i),this.horizontalDirection=this.options.isRTL?"right":"left";var o=this.element.css("padding-"+this.horizontalDirection),u=this.element.css("padding-top");this.offset={x:o?parseInt(o,10):0,y:u?parseInt(u,10):0},this.isFluid=this.options.columnWidth&&typeof this.options.columnWidth=="function";var a=this;setTimeout(function(){a.element.addClass("masonry")},0),this.options.isResizable&&t(e).bind("smartresize.masonry",function(){a.resize()}),this.reloadItems()},_init:function(e){this._getColumns(),this._reLayout(e)},option:function(e,n){t.isPlainObject(e)&&(this.options=t.extend(!0,this.options,e))},layout:function(e,t){for(var n=0,r=e.length;n<r;n++)this._placeBrick(e[n]);var i={};i.height=Math.max.apply(Math,this.colYs);if(this.options.isFitWidth){var s=0;n=this.cols;while(--n){if(this.colYs[n]!==0)break;s++}i.width=(this.cols-s)*this.columnWidth-this.options.gutterWidth}this.styleQueue.push({$el:this.element,style:i});var o=this.isLaidOut?this.options.isAnimated?"animate":"css":"css",u=this.options.animationOptions,a;for(n=0,r=this.styleQueue.length;n<r;n++)a=this.styleQueue[n],a.$el[o](a.style,u);this.styleQueue=[],t&&t.call(e),this.isLaidOut=!0},_getColumns:function(){var e=this.options.isFitWidth?this.element.parent():this.element,t=e.width();this.columnWidth=this.isFluid?this.options.columnWidth(t):this.options.columnWidth||this.$bricks.outerWidth(!0)||t,this.columnWidth+=this.options.gutterWidth,this.cols=Math.floor((t+this.options.gutterWidth)/this.columnWidth),this.cols=Math.max(this.cols,1)},_placeBrick:function(e){var n=t(e),r,i,s,o,u;r=Math.ceil(n.outerWidth(!0)/this.columnWidth),r=Math.min(r,this.cols);if(r===1)s=this.colYs;else{i=this.cols+1-r,s=[];for(u=0;u<i;u++)o=this.colYs.slice(u,u+r),s[u]=Math.max.apply(Math,o)}var a=Math.min.apply(Math,s),f=0;for(var l=0,c=s.length;l<c;l++)if(s[l]===a){f=l;break}var h={top:a+this.offset.y};h[this.horizontalDirection]=this.columnWidth*f+this.offset.x,this.styleQueue.push({$el:n,style:h});var p=a+n.outerHeight(!0),d=this.cols+1-c;for(l=0;l<d;l++)this.colYs[f+l]=p},resize:function(){var e=this.cols;this._getColumns(),(this.isFluid||this.cols!==e)&&this._reLayout()},_reLayout:function(e){var t=this.cols;this.colYs=[];while(t--)this.colYs.push(0);this.layout(this.$bricks,e)},reloadItems:function(){this.$bricks=this._getBricks(this.element.children())},reload:function(e){this.reloadItems(),this._init(e)},appended:function(e,t,n){if(t){this._filterFindBricks(e).css({top:this.element.height()});var r=this;setTimeout(function(){r._appended(e,n)},1)}else this._appended(e,n)},_appended:function(e,t){var n=this._getBricks(e);this.$bricks=this.$bricks.add(n),this.layout(n,t)},remove:function(e){this.$bricks=this.$bricks.not(e),e.remove()},destroy:function(){this.$bricks.removeClass("masonry-brick").each(function(){this.style.position="",this.style.top="",this.style.left=""});var n=this.element[0].style;for(var r in this.originalStyle)n[r]=this.originalStyle[r];this.element.unbind(".masonry").removeClass("masonry").removeData("masonry"),t(e).unbind(".masonry")}},t.fn.imagesLoaded=function(e){function u(){e.call(n,r)}function a(e){var n=e.target;n.src!==s&&t.inArray(n,o)===-1&&(o.push(n),--i<=0&&(setTimeout(u),r.unbind(".imagesLoaded",a)))}var n=this,r=n.find("img").add(n.filter("img")),i=r.length,s="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==",o=[];return i||u(),r.bind("load.imagesLoaded error.imagesLoaded",a).each(function(){var e=this.src;this.src=s,this.src=e}),n};var s=function(t){e.console&&e.console.error(t)};t.fn.masonry=function(e){if(typeof e=="string"){var n=Array.prototype.slice.call(arguments,1);this.each(function(){var r=t.data(this,"masonry");if(!r){s("cannot call methods on masonry prior to initialization; attempted to call method '"+e+"'");return}if(!t.isFunction(r[e])||e.charAt(0)==="_"){s("no such method '"+e+"' for masonry instance");return}r[e].apply(r,n)})}else this.each(function(){var n=t.data(this,"masonry");n?(n.option(e||{}),n._init()):t.data(this,"masonry",new t.Mason(e,this))});return this}})(window,jQuery);


$('.inner').masonry({
    itemSelector: '.inner div',
    columnWidth: 0,
    isAnimated: true,
    isFitWidth: true
});
</script>           
</body>
</html>

I've presented all the code here for convenience, although typically, you'd have that script at the bottom in a separate file.

Answer №2

Simply make the following alteration:

.inner {
   margin:0 auto;
   padding:10px;
   border:5px solid green;
   display:inline-block;
   text-align:center; // now centered
}

jsfiddle

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