html {
  font: 16px/1 "Montserrat", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  xborder-top: 10px solid #343a40;
  color: #343a40;
  background: #fff linear-gradient(to bottom, #e9ecef, #fff 200px);
}

/*The box-sizing property allows us to include the padding and border in an element's total width and height.*/
*, *::before, *::after {
  box-sizing: border-box;
}

header, .portfolio-heading, .portfolio-main-image, .portfolio-section-links, .portfolio-resume {
  width: 800px;
  max-width: calc(100% - 40px);
  margin: 0 auto;
}

nav {
  position: relative;
  margin-top: 25px;
}

/*nav ul li {
  float: left;
  width: 50%;
}*/

/*nav ul li:first-child {
  text-align: right;
  padding-right: 20px;
}*/

nav ul li:last-child {
  /*text-align: left;
  padding-left: 20px;*/
  text-align: center;
}

nav a {
  color: #343a40;
  font-weight: bold;
  text-transform: uppercase;
  text-decoration: none;
}

nav .current {
  padding-bottom: 2px;
  border-bottom: 2px solid #343a40;
}

.portfolio-social {
  display: flex;
  align-items: center;
  justify-content: center;
  xmargin: 0 auto;
  margin-top: 20px;
  list-style: none;
}

.portfolio-social li {
  flex: 1; /*same size*/
  position: relative;
  text-align: center;
  font-size: 1.5rem;
}

.portfolio-social li:not(:first-child) {
  padding-left: 5px;
}

/*put a seperator between the items*/
.portfolio-social li:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 0px;
  transform: translate(50%, -50%) rotate(0deg);
  width: 2px;
  height: 100%;
  background-color: #dee2e6;
}

.portfolio-social a {
  display: block;
  width: 100%;
  padding: 10px 0;
  color: #686f77;
}

.portfolio-social a:hover {
  color: #343a40;
}

.portfolio-resume a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 15px;
}

nav ul, .portfolio-section-links ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

nav ul::after, footer::after, .portfolio-section-links::after {
  content: '';
  display: block;
  clear: both;
}

p {
  margin: 0;
}

a {
  text-decoration: none;
}

header {
  margin-top: 30px;
}

main {
  flex: 1;
  margin-top: 60px;
}

h1 {
  margin: 0;
  font-size: 2.25rem;
  font-weight: bold;
}

footer {
  margin-top: 50px;
  background-color: #343a40;
  color: #f8f9fa;
  text-align: center;
  padding: 10px;
}

footer a {
  color: #fff;
}

footer a:not(:first-child) {
  margin-left: 5px;
}

footer a:not(:last-child){
  padding-right: 10px;
  border-right: 1px solid;
}

.portfolio-heading {
  text-align: center;
}

.portfolio-heading h1 {
  font-size: 2.75rem;
  text-transform: uppercase;
  text-shadow: 1px 1px #fff, 3px 3px #dee2e6;
}

.portfolio-intro {
  margin-top: 10px;
  color: #686f77;
  line-height: 1.25;
  font-size: 1.25rem;
}

.portfolio-main-image {
  display: block;
  width: 900px;
  margin-top: 40px;
  border: 5px solid #fff;
  box-shadow: 0 0 20px rgba(33, 37, 41, 0.5);
}

.portfolio-section-links {
  margin-top: 40px;
}

.portfolio-section-links h2 {
  margin: 0;
  padding-top: 20px;
  border-top: 2px solid #dee2e6;
  font-size: 1.25rem;
  text-transform: uppercase;
}

.portfolio-section-links li {
  margin-top: 20px;
}

.portfolio-section-links a {
  display: flex;
  color: #686f77;
}

.portfolio-section-links a:hover h3 {
  text-decoration: underline;
}

.portfolio-section-links a:hover .fa {
  color: #343a40;
}

.portfolio-section-links img, .portfolio-section-links .view-more-blank-div {
  width: 100px;
  height: 60px;
  border: 2px solid #fff;
  box-shadow: 0 0 10px rgba(33, 37, 41, 0.5);
}

.portfolio-section-links .view-more-blank-div{
	border: none;
	box-shadow: none;
	height: 0px;
}

.portfolio-section-links .portfolio-link-text {
  flex: 1;
  padding-left: 20px;
  line-height: 1.25;
}

.portfolio-section-links h3 {
  margin: 0;
  color: #343a40;
  font-size: inherit;
  font-weight: bold;
}

.portfolio-section-links .fa {
  padding: 21px 0 0 20px;
  color: #dee2e6;
  font-size: 1.25rem;
}

.portfolio-section-links li:last-child .view-more-chevron-right {
  padding: 0px;
}

.portfolio-resume .fa {
  font-size: 1.75rem;
}

.portfolio-resume span {
  padding: 1px 0 0 10px;
  text-transform: uppercase;
}

/*Device width greater than or equal to 501px*/
@media only screen and (min-width: 501px) {
  header {
    margin-top: 40px;
  }
  main {
    margin-top: 80px;
  }
  footer {
    margin-top: 40px;
  }
  h1 {
    font-size: 3rem;
  }
  .portfolio-heading h1 {
    font-size: 3.5rem;
  }
  .portfolio-intro {
    font-size: 1.5rem;
  }
  .portfolio-resume {
    xmargin-top: 20px;
  }
  .portfolio-resume a {
    margin-top: 20px;
    color: #fff;
  }
  .portfolio-main-image, .portfolio-section-links {
    margin-top: 60px;
  }

  .desktop-goto-icon{
    display: block;
  }

  /*two columns layout */
  .portfolio-section-links h2 {
    float: left;
    width: calc(25% - 20px);
  }
  .portfolio-section-links ul {
    margin-left: calc(25% + 20px);
    border-top: 2px solid #dee2e6;
  }
  .mobile-goto-icon{
    display: none;
  }
  .desktop-goto-icon{
    display: block;
  }
  
}

/*Mobile devices*/
@media screen and (max-width: 500px){
  .mobile-goto-icon{
    display: block;
    position: relative;
    xtop: 10;
    top: -60px;
    left: 100px;
  }
  .desktop-goto-icon{
    display: none;
  }
  .portfolio-section-links a{
    display: block;
  }
  .portfolio-section-links .portfolio-link-text{
    padding-left: 0px;
  }
  
  .portfolio-section-links h3{
    margin: 0 0 5px 0;
    text-decoration: none;
  }

  .portfolio-section-links h3::after, .portfolio-section-links .view-more-text::after{
    padding: 0px 0 0 10px;
    color: #dee2e6;
    font-size: 1.25rem;
    font: normal normal normal 14px/1 FontAwesome;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    content: "\f054";

  }
 
  .portfolio-section-links a:hover h3 {
    text-decoration: none;
  }

  footer{
    display: flex;
    flex-direction: column;
    margin-top: 50px;
    background-color: #343a40;
    color: #f8f9fa;
    text-align: center;
    padding: 10px;
  }

  footer a{
    padding: 0 0 10px 0;
  }

  footer a:not(:first-child) {
    margin-left: 0px;
  }
  
  footer a:not(:last-child){
    padding-right: 10px;
    border-right: none;
  }
}