html {
  height: 100%;
  font-family: Calibri, Arial, sans-serif;
}

a {
  text-decoration: none;
  color: inherit;
  margin: 0;
  padding: 0;
}

img,
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  padding: 0;
}

/* Define the clearfix class */
.clearfix::after {
  content: "";
  display: table;
  clear: both;
}


body {
  background: url(../web_images/abstract_background.png) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  height: 100%;
  margin: 0;
  padding: 0;
}

#header {
  height: 64px;
  width: 100%;
  margin: 0;
  padding: 25px 0 25px 0;
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

#header ul {
  list-style-type: none;
  padding: 16px 0 16px 16px;
  margin: 0;
  float:right;
  display: flex;
}

#header ul li {
  display: inline;
  margin: 0 30px 0 0;
  font-size: 22px;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  font-family: 'Helvetica';
  font-weight: 600;
}

#header ul li:last-of-type {
  margin-right:0;
}

#header ul li:hover {
  color: rgba(255, 255, 255, 1);
}

#header ul li:active {
  margin-top:2px;
}

.active-li {
  text-decoration: underline;
  text-decoration-thickness: 4px;
  text-underline-offset: 6px;
}

.portfolio-headline {
  font-size: 28px;
  font-weight: 900;
  /* padding: 5px 0 0 20px; */
  margin: 0 0 10px 0;
}

.width-container {
  width: 1280px;
  height: 100%;
  margin: auto;
  display: block;
}

.full-width-container {
  width: 100%;
  background-color: #5b5b5b;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 11px 11px rgba(91, 91, 91, 1);
  margin: auto;
  display: block;
}

#logo {
  height: 66px;
}

#logo-icon {
  width: 66px;
  height: 66px;
  background: url(../web_images/LOGO_small.png);
  float: left;
}

#logo-text {
  float: left;
  font-size: 28px;
  color: white;
  padding: 8px 0 0 22px;
  font-family: Helvetica, Arial, sans-serif;
  font-weight: 800;
}

#logo-text:hover {
  text-decoration: underline;
  text-decoration-thickness: 4px;
}


.call-to-action-container {
  color: white;
  text-align: center;
  font-size: 32px;
  font-weight: bold;
  line-height: 50px;
  padding: 65px 0 25px 0;
  margin: 0 0 60px 0;
  text-shadow: 0px 0px 6px #000000;
  font-family: 'Helvetica';
}

.portfolio-container h1 {
  color: #FFFFFF;
  text-shadow: 1px 1px 3px #000000;
  margin: 15px 25px 15px 25px;
  width: 100%;
}

.portfolio-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 1px 2px 10px rgba(0, 0, 0, 0.25);
  width: 1280px;
  min-height: 800px;
  padding: 0 0 300px 0;
}


.portfolio-container a {
  display: block;
  position: relative;
  margin: 10px;
  text-align: center;
}

.portfolio-container img {
  max-width: 292px;
  height: auto;
  border-radius: 6px;
  transition: transform 0.3s ease;
}

.overlay-text {
  font-family: 'Arial black';
  font-size:38px;
  font-weight: bolder;
  /*text-shadow: 1px 1px 3px #000000;*/
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  opacity: 0;
  /*background: rgba(0, 0, 0, 0.95);*/
  color: white;
  -webkit-text-stroke: 2px black;
  padding: 10px;
  transition: opacity 0.1s ease;
}

.portfolio-container a:hover .overlay-text {
  opacity: 1;
}

.portfolio-container a:hover img {
  transform: scale(1.08);
  border-radius: 4px;
}