index.css

/* Main */

.portfolio {
  overflow-x: hidden; /* needed because hiding the menu on the right side is not perfect,  */
}

header {
  position: sticky;
  min-width: 200px;
}
.fa-terminal {
  color : white;
}

.name {
  color : white;
  float : left;
  display : inline;
  position:absolute;
  padding-left: 20px;
}

.nav-link a {
  color : white;
  float : right;
  display : inline;
  padding : .5rem 1rem;
}

.project-title {
  text-align: center;
}

/*Tiles*/
.col-md-4,
.col-md-4 * {
	box-sizing: border-box;
}
.col-md-4 {
	position: relative;
	display: inline-block;
	overflow: hidden;
	max-width: 100%;
	height: auto;
}
.col-md-4 img {
	max-width: 100%;
  max-height: 100%;
  margin-left: auto;
  margin-right: auto;
}
.col-md-4 .card-img-top{
	display: block;
}
.col-md-4 .card-text {
	opacity: 0;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, 0.8);
	color: #fff;
	padding: 15px;
	-moz-transition: all 0.4s ease-in-out 0s;
	-webkit-transition: all 0.4s ease-in-out 0s;
	-ms-transition: all 0.4s ease-in-out 0s;
	transition: all 0.4s ease-in-out 0s;
}
.col-md-4:hover .card-text,
.col-md-4.active .card-text {
	opacity: 1;
}
.col-md-4 .col-md-4-text {
	text-align: center;
	font-size: 18px;
	display: inline-block;
	position: absolute;
	top: 50%;
	left: 50%;
	-moz-transform: translate(-50%, -50%);
	-webkit-transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);
}
.col-md-4 .col-md-4-text_mobile {
	font-size: 15px;
	border-top: 1px solid rgb(179, 179, 179); /* for old browsers */
	border-top: 1px solid rgba(179, 179, 179, 0.7);
	margin-top: 5px;
	padding-top: 2px;
	display: none;
}
.col-md-4.active .col-md-4-text_mobile {
	display: block;
}

/*Image sizing*/
.card-img-top {
    position: relative;
    float: left;
    width:  300px;
    height: 300px;
    background-position: 50% 50%;
    background-repeat:   no-repeat;
    background-size:     cover;
}


/*Hamburger menu*/
body
{
  margin: 0;
  padding: 0;
}

a
{
  text-decoration: none;
  color: #232323;

  transition: color 0.3s ease;
}

a:hover
{
  color: tomato;
}

#menuToggle
{
  display: block;
  position: absolute;
  top: 5px;
  right: 20px;

  z-index: 1;

  -webkit-user-select: none;
  user-select: none;
}

#menuToggle input
{
  display: block;
  width: 40px;
  height: 32px;
  position: absolute;
  top: -7px;
  left: -5px;

  cursor: pointer;

  opacity: 0; /* hide this */
  z-index: 2; /* and place it over the hamburger */

  -webkit-touch-callout: none;
}

/*
 * Just a quick hamburger
 */
#menuToggle span
{
  display: block;
  width: 33px;
  height: 4px;
  margin-bottom: 5px;
  position: relative;

  background: #cdcdcd;
  border-radius: 3px;

  z-index: 1;

  transform-origin: 4px 0px;

  transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
              background 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
              opacity 0.55s ease;
}

#menuToggle span:first-child
{
  transform-origin: 0% 0%;
}

#menuToggle span:nth-last-child(2)
{
  transform-origin: 0% 100%;
}

/*
 * Transform all the slices of hamburger
 * into a crossmark.
 */
#menuToggle input:checked ~ span
{
  opacity: 1;
  transform: rotate(45deg) translate(-2px, -1px);
  background: #232323;
}

/*
 * But let's hide the middle one.
 */
#menuToggle input:checked ~ span:nth-last-child(3)
{
  opacity: 0;
  transform: rotate(0deg) scale(0.2, 0.2);
}

/*
 * Ohyeah and the last one should go the other direction
 */
#menuToggle input:checked ~ span:nth-last-child(2)
{
  opacity: 1;
  transform: rotate(-45deg) translate(0, -1px);
}

/*
 * Make this absolute positioned
 * at the top left of the screen
 */
#menu
{
  position: absolute;
  width: 250px;
  margin: -100px 0 0 0;
  padding: 50px;
  padding-top: 125px;
  right: -100px;

  background: #ededed;
  list-style-type: none;
  -webkit-font-smoothing: antialiased;
  /* to stop flickering of text in safari */

  transform-origin: 0% 0%;
  transform: translate(100%, 0);

  transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
}

#menu li
{
  padding: 10px 0;
  font-size: 22px;
}

/*
 * And let's fade it in from the left
 */
#menuToggle input:checked ~ ul
{
  transform: scale(1.0, 1.0);
  opacity: 1;
}