style.css

html,
body {
  margin: 0;
  padding: 0;
  /*********************************************************
  *
  * Makes the hero.jpg image fill the height of the browser
  * along with properites in .background-image
  *
  *********************************************************/
  height: 100%;
}


/***************************
********** BUTTONS *********
****************************/
.btn-primary {
  background-color: #d51419;
  border-color: #dc3545;
}

.btn-primary:hover {
  background-color: #dc3545;
  border-color: #d51419;
}



/***************************
********** HEADER **********
****************************/
.background-image {
  padding-top: 25px;
  /*********************************************************
  *
  * Make the hero.jpg image fill the height of the browser
  *
  *********************************************************/
  background-image: url("images/hero.jpg");
  background-size: cover;
  height: 100%;
}

header .container {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0 15px;
}

.navbar-brand > img {
  display: block;
  /*************************************************
  *
  * Shorthand: TOP RIGHT BOTTOM LEFT
  * https://developer.mozilla.org/en-US/docs/Web/CSS/Shorthand_properties
  *
  ***************************************************/
  margin: 0 0 5px 0;
}

.navbar-brand--sublogo {
  color: black;
  font-size: 13px;
  /*********************************
  *
  * CSS Layout: "Flexbox"
  * https://css-tricks.com/snippets/css/a-guide-to-flexbox/
  *
  * https://css-tricks.com/dont-overthink-flexbox-grids/
  *
  *********************************/
  display: flex;
  align-items: center;
  justify-content: flex-end;
  /* end */
}

nav a {
  color: white;
  padding: 10px 5px;
  margin-right: 10px;
}

/***************************************************************
*
* Pseudo Elements
* https://www.w3schools.com/CSS/css_pseudo_elements.asp
*
* :last-child
* https://developer.mozilla.org/en-US/docs/Web/CSS/:last-child
*
****************************************************************/

nav a:last-child {
  margin: 0;
}

nav a:hover {
  color: white;
  text-decoration: underline;
}



/***************************
********** MAIN **********
****************************/
main {
  position: relative;

  /******************************************************
  *
  * calc
  * https://developer.mozilla.org/en-US/docs/Web/CSS/calc
  *
  *******************************************************/
  top: calc(50% - 134px);
}

main h2 {
  color: white;
  font-size: 50px;

  /********************************************************
  *
  * Text Shadow
  * https://www.w3schools.com/cssref/css3_pr_text-shadow.asp
  *
  * RGBA
  * https://www.w3schools.com/cssref/func_rgba.asp
  *
  *********************************************************/
  text-shadow: 1px 1px 15px rgba(0, 0, 0, .2);
}

main p {
  font-size: 20px;
  color: white;
  text-shadow: -1px 1px 15px rgba(0,0,0,.2);
}


/************************
****** Instagram ********
************************/

/* :last-child
*
* https://www.w3.org/wiki/CSS/Selectors/pseudo-classes/:last-child
*
*/
.instagram-container .col:last-child {
  padding-left: 0;
}

/* position:absolute
*
* https://developer.mozilla.org/en-US/docs/Web/CSS/position
*
*/
.ig-logo {
  left: 10px;
  bottom: 10px;
  position: absolute;
  width: 40px;
}


/********************/
/* PRODUCTS CONTENT CSS */
/********************/
#desktop-products > .row {
  margin: 0 10px;
}

.peppers-product {
  padding: 0 5px;
}

.peppers-product > p, .product-price {
  background-color: #fAfAfA;
  color: #000;
  text-align: center;
}

.peppers-product > p {
  font-size: 1em;
  font-weight: 500;
  margin-bottom: 0;
}

p.product-price {
  font-weight: bold;
  font-size: 1.25em;
  margin-bottom: 0;
  padding-bottom: 1.5em;
}

.peppers-product > h3 {
  background-color: #fAfAfA;
  font-style: italic;
  font-weight: bold;
  margin-bottom: 0;
  padding-bottom: 1.5em;
  text-align: center;
}

.product-cta-container {
  background-color: #fAfAfA;
  padding-bottom: 3em;
  text-align: center;
}

/* responsive */

#mobile-products-container {
  display: block;
}

#desktop-products {
  display: none;
}

@media (min-width: 768px) {
  #mobile-products-container {
    display: none;
  }

  #desktop-products {
    display: block
  }
}

.circles {
  padding: 0 0 2rem;
}

.circle {
  border-radius: 100%;
  display: inline-block;
  height: 20px;
  width: 20px;
}

.red {
  background: red;
}

.green {
  background: green;
}

.blue {
  background: blue;
}

.black {
  background: black;
}