How to add equal space between inline block elements?

Question

I don't want to auto fill space with blocks content. I want equal spacing between fixed-width blocks, that would also be flexible.

I can do that by adding padding-right: whatever; and then adding another padding-right: 0; to .last block, but that's very primitive and not mobile friendly.

My code: https://jsfiddle.net/9twy5drd/1/

.container {
  width: 100%;
  border: 1px solid red;
  text-align: center;
  padding: 5px 0;
}
.container .block {
  display: inline-block;
  border: 1px solid green;
  padding: 10px;
}

.container2 {
  width: auto;
  border: 1px solid red;
  padding: 5px;
}
.container2 .block {
  display: inline-block;
  border: 1px solid green;
  padding: 10px;
  margin: 0 47px 0 0;
}
.container2 .block.last {
  margin: 0;
}

<div class="container">
  <div class="block">Some block</div>
  <div class="block">Some block</div>
  <div class="block">Some block</div>
  <div class="block">Some block</div>
</div>

<p>What we want, but not with fixed method:</p>

<div class="container2">
  <div class="block">Some block</div>
  <div class="block">Some block</div>
  <div class="block">Some block</div>
  <div class="block last">Some block</div>
</div>

Answer 1

You could use Flexbox and justify-content: space-between;

.container {
  width: 100%;
  border: 1px solid red;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 5px 0;
}
.container .block {
  border: 1px solid green;
  padding: 10px;
}

<div class="container">
  <div class="block">Some block</div>
  <div class="block">Some block</div>
  <div class="block">Some block</div>
  <div class="block">Some block</div>
</div>

Here is js solution for older browsers that don't support Flexbox. I calculated margin-left for each block element to create equal spacing between elements. Also white space from HTML must be removed.

$(window).on("resize", function() {
  var block = $('.container > .block');
  var count = block.length;
  var bWidth = block.outerWidth();
  var pWidth = $('.container').innerWidth();

  var margin = (pWidth - (bWidth * count)) / (count - 1);

  if (margin > 0) block.not(':last').css('margin-right', margin);
}).resize();

.container {
  width: 100%;
  border: 1px solid red;
  text-align: center;
  padding: 5px 0;
}
.container .block {
  border: 1px solid green;
  display: inline-block;
  padding: 10px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
  <div class="block">Some block</div><div class="block">Some block</div><div class="block">Some block</div><div class="block">Some block</div>
</div>