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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

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About the <head>

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <svg id="right" class="active" height="600px" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" data-pos="right" style="" viewBox="0 0 1000 600"><image xlink:href="http://varsitycart.presentation.site/image/catalog/Jackets/Black-Burnt-Orange-Burnt-Orange_mens_varsity_sright-ide.jpg" x="0" y="0" height="100%" width="100%"></image>
   <line id="line" x1="480" y1="150" x2="500" y2="350" stroke="black"></line>
  <g id="patch_218_454">

  <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="426" y="160" width="108" height="72" viewBox="-0.199 -0.234 600.482 600.482" enable-background="new -0.199 -0.234 600.482 600.482" xml:space="preserve" class="right-shoulder" data-patch-height="3.00" data-patch-width="4.50" id="box">
<g id="Layer_1">
  <polygon id="Bottom_Felt" fill="url(#Layer_1_4)" stroke="none" stroke-width="0" stroke-miterlimit="10" points="197.429,25.006 
    425.629,25.006 425.629,186.788 415.179,186.788 509.211,399.651 574.825,399.651 574.825,575.006 325.321,575.006 
    325.321,427.326 270.156,427.326 270.156,574.542 25.258,574.542 25.258,399.186 88.369,399.186 179.897,186.292 167.342,186.292 
    167.342,25.006 197.027,25.006   " fill-rule="evenodd"></polygon>
<defs><pattern id="Layer_1_4" patternUnits="userSpaceOnUse" width="100" height="100"><image xlink:href="http://varsitycart.presentation.site/image/colors/5b0c527b85f12.png" width="100" height="100" x="0" y="0"></image></pattern></defs></g>
<g id="Layer_2">
  <path id="Top_Felt" fill="url(#Layer_2_5)" stroke="none" stroke-width="0" stroke-miterlimit="10" d="M222.507,44.704H408.5v131.292
    h-16.946l106.154,242.641h59.987v136.921H342.45V418.636h31.57l-3.152-11.008H227.732l-4.607,10.792h29.685v136.425H42.605V418.636
    h56.215l105.504-242.641h-19.418V44.92h37.384L222.507,44.704z M299.625,235.056l27.985,54.391h-55.566l27.798-54.391H299.625z" fill-rule="evenodd"></path>
<defs><pattern id="Layer_2_5" patternUnits="userSpaceOnUse" width="100" height="100"><image xlink:href="http://varsitycart.presentation.site/image/colors/5b0c59744698f.png" width="100" height="100" x="0" y="0"></image></pattern></defs></g>
<g id="Layer_3">
  <path id="Attaching_Chain" fill="url(#Layer_3_6)" stroke="none" stroke-width="0" stroke-miterlimit="10" d="M200.583,55.495h198.484
    v109.462H376.31l115.121,264.007h56.647v115.8H352.469V428.5h33.644l-7.915-31.416H221.053L209.767,428.5h33.858v115.584H52.222
    v-115.12h52.659L219.6,164.957h-25.294V55.495l33.024-0.248L200.583,55.495z M255.314,300.021l44.527-86.054l44.28,85.807
    l-89.023,0.247l16.512-31.199L255.314,300.021z" fill-rule="evenodd"></path>
<defs><pattern id="Layer_3_6" patternUnits="userSpaceOnUse" width="100" height="100"><image xlink:href="http://varsitycart.presentation.site/image/colors/5b0c59746fff9.png" width="100" height="100" x="0" y="0"></image></pattern></defs></g>
<g id="Layer_4">
  <path id="Fill" fill="url(#Layer_4_7)" stroke="none" stroke-width="0" stroke-miterlimit="10" d="M297.738,207.041l-51.113,98.669
    H352.81l-52.443-101.917l-2.628,3.216V207.041z M199.47,61.247h194.433v98.299h-26.098L488.74,434.932h54.608v104.36H357.294
    v-104.36l35.715-0.68l-11.103-43.105l-164.409,1.361l-15.615,41.744h36.611v104.359H57.263v-103.68h50.401l120.038-275.386H199.47
    V61.247L199.47,61.247z" fill-rule="evenodd"></path>
<defs><pattern id="Layer_4_7" patternUnits="userSpaceOnUse" width="100" height="100"><image xlink:href="http://varsitycart.presentation.site/image/colors/5b0c59744395f.png" width="100" height="100" x="0" y="0"></image></pattern></defs></g>
</svg>
</g></svg>
!

CSS
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JS 

              
                var box = document.querySelector("#box");
var line = document.querySelector("#line");


var x1 = line.x1.baseVal.value || 0;
var y1 = line.y1.baseVal.value || 0;
var x2 = line.x2.baseVal.value || 0;
var y2 = line.y2.baseVal.value || 0;

var C = x2 - x1;
var D = y2 - y1;

var distSq  = C * C + D * D;


TweenLite.set(box, {
  xPercent: -50,
  yPercent: -50
});

var draggable = new Draggable(box, {
  allowContextMenu: true,
  throwProps: true,
   // bounds:{minX:-14, maxX:16, minY:0, maxY:120},
  liveSnap: {
    points: getClosestPoint
  }  
});

TweenLite.set(box, getClosestPoint({ 

  x: draggable.x, 
  y: draggable.y 
}));

draggable.update(true)

function getClosestPoint(point) {
  
  var A = point.x - x1;
  var B = point.y - y1;

  var dotProd = A * C + B * D;
  var determ  = dotProd / distSq;

  var x, y;

  if (determ < 0 || (x1 === x2 && y1 === y2)) {
    x = x1;
    y = y1;

  } else if (determ > 1) {
    x = x2;
    y = y2;

  } else {
    x = x1 + determ * C;
    y = y1 + determ * D;        
  }
  

  return {
    x: x,
    y: y
  };
}
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999px

Console