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              <article class="container">
<section><h1>Whats responssive typogrophy?</h1><p>Its when teh size of yuor font chnages with the wdith of the broewsr. try chagning this pens farme size and you'll see the fnot getting smalelr with it.</p></section>
<section class="pull-left">
  <div class="col-xs-12 col-sm-6">
  <h2>How does it do this?</h2>
  <p>There's a couple steps, but mainly you want your font sizes expressed in <i>rem</i> units.  Not px or em - but <strong>rem</strong>.</p>
  <p>Rem stands for <em>root</em>-em.  The relative size of the font is tied to the size of the root (a.k.a. the HTML element).</p>
    <p>This technique can also be applied to a bunch of stuff like padding (as it is here), line-heights, and even images.</p>
 </div>
<div class="col-xs-12 col-sm-offset-1 col-sm-5">
  <h3>Fun facts</h3>
  <ul>
    <li>A study at Cambridge University determined that words whose letters had been scrambled, except for the first and last, are read just as fast as the unscrambled version.</li>
    <li>That study actually never existed and was just a misinterpreted letter from a professor.</li>
    <li>It still seems true nonetheless though, eh?</li>
  </ul>
  </div>
</section>
<section class="col-xs-12">
  <h2>Why not just use em?</h3>
  <p>Using 'em' units can be difficult because how big   '1 em' is will always be changing.  A single 'em' is just the current font-size of the parent element, so you will need to keep multiply to get different font sizes. The issue becomes more apparent when you are nesting elements.</p>
  <div class="example">
  <div class="example-heading">
    <span>This section uses 'em' instead of 'rem'</span>
  </div>
  <div class="example-body">  
    <p style="font-size: 1em">This element starts as 1em... 
    <span style="font-size: 2em">and has a nested 2em followed by... 
      <span style="font-size: 0.75em">a nested 0.75em element.</span></span></p>
    </div>
    </div>
  <p>In the example, the 0.75em element ends up being with a larger font size than the parent element which is 1em.  This may be easy to keep track of with just two nested elements, but 6 or 8 deep and see how it goes.</p>
</section>
  </article>
            
          
!
            
              $base-font-size: 16; //will translate to 16px when html font-size is 62.5%
$h1-font-size: 40;
$h2-font-size: 26;

$base-line-height: 1.4em;
$base-pad-size: 20;

@function rem-sizing($target-size){
		@return ($target-size / 10);
}

@mixin font-size($font-size: $base-font-size) {
	font-size: ($font-size) + px;
	font-size: rem-sizing($font-size) + rem;	
}

@mixin line-height($line-height: $base-line-height) {
	line-height: ($line-height) + px;
	line-height: rem-sizing($line-height) + rem;	
}


@mixin text-padding($text-padding: $base-pad-size, $pad2: false, $pad3: false, $pad4: false) {
	@if $pad4 {	
		padding: ($text-padding) + px ($pad2) + px ($pad3) + px ($pad4) + px;
		padding: rem-sizing($text-padding) + rem rem-sizing($pad2) + rem rem-sizing($pad3) + rem rem-sizing($pad4) + rem;
	} @else if $pad3 {
		padding: ($text-padding) + px ($pad2) + px ($pad3) + px;
		padding: rem-sizing($text-padding) + rem rem-sizing($pad2) + rem rem-sizing($pad3) + rem;
	} @else if $pad2 {
		padding: ($text-padding) + px ($pad2) + px;
		padding: rem-sizing($text-padding) + rem rem-sizing($pad2) + rem;
	} @else {
		padding: ($text-padding) + px;
		padding: rem-sizing($text-padding) + rem;
	}
}

@mixin padding($side, $padAmount: $base-pad-size) {
	padding-#{$side}: ($padAmount) + px;
	padding-#{$side}: rem-sizing($padAmount) + rem;	
}

p{
	@include font-size(20);
  line-height: $base-line-height;
}

li{
  @include font-size(18);
  @include padding(bottom,5);
  font-weight:300;
  list-style: square;
  line-height: $base-line-height;
}

h1{
	@include font-size($h1-font-size);	
}

h2{
	@include font-size($h2-font-size);
	@include text-padding(0,0,10);
}

h3{
  @include font-size(24);
  font-weight: 200;
}


.container{
  background: rgba(230,230,230,0.25);
  @include text-padding(10,50);
}

section{
  border-top:1px solid black;
  border-bottom:1px solid #ddd;
  @include text-padding(30);
}

.example{
    background: url('https://i.imgur.com/KBfRhVq.png');
  box-shadow: -1px -1px 5px #000;
}
.example-heading{
  @include text-padding(10,10,5,10);
  background: rgba(201, 104, 104, 0.7);
  color: white;
}
.example-body{
  @include text-padding(20);
  margin-bottom: 20px;
}


body{
  background: url('https://i.imgur.com/v3cosn3.png'); 
  text-rendering:optimizeLegibility; 
}


	html{font-size: 45%;}

@media (min-width: 768px) {
	html{font-size: 55%;}
  
  p{
    @include padding(bottom,15);
    line-height: 1.5em;
  }
  
  li{
    @include padding(bottom,10);
  }
}

@media (min-width: 992px) {
	html{font-size: 62.5%;}
}

@media (min-width: 1200px) {
	html{font-size: 72%;}
}
            
          
!
999px
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