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HTML

              
                <h1>Shopping Cart</h1>

<div class="shopping-cart">

  <div class="column-labels">
    <label class="product-image">Image</label>
    <label class="product-details">Product</label>
    <label class="product-price">Price</label>
    <label class="product-quantity">Quantity</label>
    <label class="product-removal">Remove</label>
    <label class="product-line-price">Total</label>
  </div>

  <div class="product">
    <div class="product-image">
      <img src="https://s.cdpn.io/3/dingo-dog-bones.jpg">
    </div>
    <div class="product-details">
      <div class="product-title">Dingo Dog Bones</div>
      <p class="product-description">The best dog bones of all time. Holy crap. Your dog will be begging for these things! I got curious once and ate one myself. I'm a fan.</p>
    </div>
    <div class="product-price">12.99</div>
    <div class="product-quantity">
      <input type="number" value="2" min="1">
    </div>
    <div class="product-removal">
      <button class="remove-product">
        Remove
      </button>
    </div>
    <div class="product-line-price">25.98</div>
  </div>

  <div class="product">
    <div class="product-image">
      <img src="https://s.cdpn.io/3/large-NutroNaturalChoiceAdultLambMealandRiceDryDogFood.png">
    </div>
    <div class="product-details">
      <div class="product-title">Nutro™ Adult Lamb and Rice Dog Food</div>
      <p class="product-description">Who doesn't like lamb and rice? We've all hit the halal cart at 3am while quasi-blackout after a night of binge drinking in Manhattan. Now it's your dog's turn!</p>
    </div>
    <div class="product-price">45.99</div>
    <div class="product-quantity">
      <input type="number" value="1" min="1">
    </div>
    <div class="product-removal">
      <button class="remove-product">
        Remove
      </button>
    </div>
    <div class="product-line-price">45.99</div>
  </div>

  <div class="totals">
    <div class="totals-item">
      <label>Subtotal</label>
      <div class="totals-value" id="cart-subtotal">71.97</div>
    </div>
    <div class="totals-item">
      <label>Tax (5%)</label>
      <div class="totals-value" id="cart-tax">3.60</div>
    </div>
    <div class="totals-item">
      <label>Shipping</label>
      <div class="totals-value" id="cart-shipping">15.00</div>
    </div>
    <div class="totals-item totals-item-total">
      <label>Grand Total</label>
      <div class="totals-value" id="cart-total">90.57</div>
    </div>
  </div>
      
      <button class="checkout">Checkout</button>

</div>
              
            
!

CSS

              
                @import "compass/css3";

/*
I wanted to go with a mobile first approach, but it actually lead to more verbose CSS in this case, so I've gone web first. Can't always force things...

Side note: I know that this style of nesting in SASS doesn't result in the most performance efficient CSS code... but on the OCD/organizational side, I like it. So for CodePen purposes, CSS selector performance be damned.
*/

/* Global settings */
$color-border: #eee;
$color-label: #aaa;
$font-default: 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, sans-serif;
$font-bold: 'HelveticaNeue-Medium', 'Helvetica Neue Medium';


/* Global "table" column settings */
.product-image { float: left; width: 20%; }
.product-details { float: left; width: 37%; }
.product-price { float: left; width: 12%; }
.product-quantity { float: left; width: 10%; }
.product-removal { float: left; width: 9%; }
.product-line-price { float: left; width: 12%; text-align: right; }


/* This is used as the traditional .clearfix class */
.group:before,
.group:after {
    content: '';
    display: table;
} 
.group:after {
    clear: both;
}
.group {
    zoom: 1;
}


/* Apply clearfix in a few places */
.shopping-cart, .column-labels, .product, .totals-item {
  @extend .group;
}


/* Apply dollar signs */
.product .product-price:before, .product .product-line-price:before, .totals-value:before {
  content: '$';
}


/* Body/Header stuff */
body {
  padding: 0px 30px 30px 20px;
  font-family: $font-default;
  font-weight: 100;
}

h1 {
  font-weight: 100;
}

label {
  color: $color-label;
}

.shopping-cart {
  margin-top: -45px;
}


/* Column headers */
.column-labels {
  label {
    padding-bottom: 15px;
    margin-bottom: 15px;
    border-bottom: 1px solid $color-border;
  }
  
  .product-image, .product-details, .product-removal {
    text-indent: -9999px;
  }
}


/* Product entries */
.product {
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid $color-border;
  
  .product-image {
    text-align: center;
    img {
      width: 100px;
    }
  }
  
  .product-details {
    .product-title {
      margin-right: 20px;
      font-family: $font-bold;
    }
    .product-description {
      margin: 5px 20px 5px 0;
      line-height: 1.4em;
    }
  }
  
  .product-quantity {
    input {
      width: 40px;
      
    }
  }
  
  .remove-product {
    border: 0;
    padding: 4px 8px;
    background-color: #c66;
    color: #fff;
    font-family: $font-bold;
    font-size: 12px;
    border-radius: 3px;
  }
  
  .remove-product:hover {
    background-color: #a44;
  }
}


/* Totals section */
.totals {
  .totals-item {
    float: right;
    clear: both;
    width: 100%;
    margin-bottom: 10px;
    
    label {
      float: left;
      clear: both;
      width: 79%;
      text-align: right;
    }
    
    .totals-value {
      float: right;
      width: 21%;
      text-align: right;
    }
  }
  
  .totals-item-total {
    font-family: $font-bold;
  }
}

.checkout {
  float: right;
  border: 0;
  margin-top: 20px;
  padding: 6px 25px;
  background-color: #6b6;
  color: #fff;
  font-size: 25px;
  border-radius: 3px;
}

.checkout:hover {
  background-color: #494;
}

/* Make adjustments for tablet */
@media screen and (max-width: 650px) {
  
  .shopping-cart {
    margin: 0;
    padding-top: 20px;
    border-top: 1px solid $color-border;
  }
  
  .column-labels {
    display: none;
  }
  
  .product-image {
    float: right;
    width: auto;
    img {
      margin: 0 0 10px 10px;
    }
  }
  
  .product-details {
    float: none;
    margin-bottom: 10px;
    width: auto;
  }
  
  .product-price {
    clear: both;
    width: 70px;
  }
  
  .product-quantity {
    width: 100px;
    input {
      margin-left: 20px;
    }
  }
  
  .product-quantity:before {
    content: 'x';
  }
  
  .product-removal {
    width: auto;
  }
  
  .product-line-price {
    float: right;
    width: 70px;
  }
  
}


/* Make more adjustments for phone */
@media screen and (max-width: 350px) {
  
  .product-removal {
    float: right;
  }
  
  .product-line-price {
    float: right;
    clear: left;
    width: auto;
    margin-top: 10px;
  }
  
  .product .product-line-price:before {
    content: 'Item Total: $';
  }
  
  .totals {
    .totals-item {
      label {
        width: 60%;
      }
      
      .totals-value {
        width: 40%;
      }
    }
  }
}
              
            
!

JS

              
                /* Set rates + misc */
var taxRate = 0.05;
var shippingRate = 15.00; 
var fadeTime = 300;


/* Assign actions */
$('.product-quantity input').change( function() {
  updateQuantity(this);
});

$('.product-removal button').click( function() {
  removeItem(this);
});


/* Recalculate cart */
function recalculateCart()
{
  var subtotal = 0;
  
  /* Sum up row totals */
  $('.product').each(function () {
    subtotal += parseFloat($(this).children('.product-line-price').text());
  });
  
  /* Calculate totals */
  var tax = subtotal * taxRate;
  var shipping = (subtotal > 0 ? shippingRate : 0);
  var total = subtotal + tax + shipping;
  
  /* Update totals display */
  $('.totals-value').fadeOut(fadeTime, function() {
    $('#cart-subtotal').html(subtotal.toFixed(2));
    $('#cart-tax').html(tax.toFixed(2));
    $('#cart-shipping').html(shipping.toFixed(2));
    $('#cart-total').html(total.toFixed(2));
    if(total == 0){
      $('.checkout').fadeOut(fadeTime);
    }else{
      $('.checkout').fadeIn(fadeTime);
    }
    $('.totals-value').fadeIn(fadeTime);
  });
}


/* Update quantity */
function updateQuantity(quantityInput)
{
  /* Calculate line price */
  var productRow = $(quantityInput).parent().parent();
  var price = parseFloat(productRow.children('.product-price').text());
  var quantity = $(quantityInput).val();
  var linePrice = price * quantity;
  
  /* Update line price display and recalc cart totals */
  productRow.children('.product-line-price').each(function () {
    $(this).fadeOut(fadeTime, function() {
      $(this).text(linePrice.toFixed(2));
      recalculateCart();
      $(this).fadeIn(fadeTime);
    });
  });  
}


/* Remove item from cart */
function removeItem(removeButton)
{
  /* Remove row from DOM and recalc cart total */
  var productRow = $(removeButton).parent().parent();
  productRow.slideUp(fadeTime, function() {
    productRow.remove();
    recalculateCart();
  });
}
              
            
!
999px

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