body {
  /* Baggrundsfarve på indholdsområde */
	background-color: #FCE4D9; /* lys beige */
}
table {
	border: 1px none
  /* 'border' holder styr på kantstregen */
  /* 'solid' betyder 'vis streg' */
  /* 'none' betyder 'fjern stregen' */
}
h1 {
	text-align: center;
	color: #ffffff; /* hvid */
	background-color: #FFFFCC; /* knækket hvid */
}
h2 {
	text-align: center;
	font-family: arial, Helvetica, sans-serif;
  font-weight: normal;
	color: #ffffff; /* hvid */
	background-color: #FCE4D9; /* lys beige */
}
h3 {
	text-align: ;
	font-family: Comic Sans MS, Helvetica, sans-serif;
  font-weight: normal;
	color: #000000; /* sort */
	background-color: #FCE4D9; /* lys beige */
}
a {
   /* Menu tekst og links */
   color: #0000ff; /* blå */
   background-color: ;
   text-decoration: none
   /* 'text-decoration' holder styr på understregning */
   /* 'underline' betyder 'vis streg' */
   /* 'none' betyder 'fjern stregen' */
}
a:hover {
   background-color: #ffffff; /* hvid */
   color: #0000ff; /* blå */
   text-decoration: none
}
a:active {
   background-color: ;
   color: #ff0000; /* rød */
   text-decoration: none
}

/* Beskrivelse under billeder */
div.desc {
  padding: 4px;
  text-align: center;
  font-size: 14px; /* 16px/16=1.0em */
}

/* Delelinie mellem afsnit - ikke i brug
.divider {
  font-size: 30px;
  display: flex;
  align-items: center;
}
.divider::before, .divider::after {
  flex: 1;
  content: '';
  padding: 3px;
  background-color: gray;
  margin: 5px;
} */

/* Retur til forside knap */
.returbtn {
  background-color: #870000;
  color: white;
  padding: 6px 12px;
  font-size: 12px;
  border: 1;
  border-radius: 10px;
}
.returbtn a {
  background-color: #870000;
  color: white;
}

/* Gå til toppen af siden knap */
#gotopbtn {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99;
  font-size: 20px;
  border: none;
  outline: none;
  background-color: red;
  color: white;
  cursor: pointer;
  padding: 10px;
  border-radius: 45%;
}
#gotopbtn:hover {
  background-color: #555;
}

<!-- Ligthbox Style -->
body { margin: 0; }

* { box-sizing: border-box; }

.row  .column {  padding: 0 5px; }
.row:after { content: ""; display: table; clear: both; }

/* Create four equal columns that floats next to eachother */
.column { float: left; width: 25%; }

/* The Modal (background) */
.modal {
  display: none;
  position: fixed;
  z-index: 1;
  padding-top: 70px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: #FCE4D9;
}

/* Modal Content */
.modal-content {
  position: relative;
  background-color: #fefefe;
  margin: auto;
  padding: 0;
  width: 90%;
  max-width: 780px;
}

/* The Close Button */
.close {
  color: black;
  position: absolute;
  top: 0px;
  right: 5px;
  font-family: Arial;
  font-size: 60px;
  font-weight: ;
}

.close:hover,
.close:focus {
  color: #999;
  text-decoration: none;
  cursor: pointer;
}

.mySlides { display: none; }

.cursor { cursor: pointer; }

/* Next & previous buttons */
.prev,
.next {
  background-color: gray;
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  padding: 16px;
  margin-top: -50px;
  color: white;
  font-weight: bold;
  font-size: 20px;
  transition: 0.6s ease;
  border-radius: 4px;
  user-select: none;
  -webkit-user-select: none;
}

/* Position the "next button" to the right */
.next { right: -20px; border-radius: 4px; }

/* Position the "previous button" to the left */
.prev { left: -20px; border-radius: 4px; }

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
}

/* Number text (1/3 etc) */
.numbertext {
  left: ;
  background-color: gray;
  color: white;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  border-radius: 3px;
  opacity: 0.8;
  top: 0;
}

img { margin-bottom: -4px; }

.caption-container {
  text-align: center;
  background-color: red;
  padding: 2px 16px;
  color: white;
}

.demo { opacity: 0.6; }

.active, .demo:hover { opacity: 1; }

img.hover-shadow { transition: 0.3s; }

.hover-shadow:hover { box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19); }
<!-- Ligthbox Style end -->