/* 20231212104845 - v2 */
.gui,
.gui-block-linklist li a {
  color: #666666;
}

.gui-page-title,
.gui a.gui-bold,
.gui-block-subtitle,
.gui-table thead tr th,
.gui ul.gui-products li .gui-products-title a,
.gui-form label,
.gui-block-title.gui-dark strong,
.gui-block-title.gui-dark strong a,
.gui-content-subtitle {
  color: #000000;
}

.gui-block-inner strong {
  color: #ffffff;
}

.gui a {
  color: #0a8de9;
}

.gui-input.gui-focus,
.gui-text.gui-focus,
.gui-select.gui-focus {
  border-color: #0a8de9;
  box-shadow: 0 0 2px #0a8de9;
}

.gui-select.gui-focus .gui-handle {
  border-color: #0a8de9;
}

.gui-block,
.gui-block-title,
.gui-buttons.gui-border,
.gui-block-inner,
.gui-image {
  border-color: #000000;
}

.gui-block-title {
  color: #ffffff;
  background-color: #000000;
}

.gui-content-title {
  color: #ffffff;
}

.gui-form .gui-field .gui-description span {
  color: #666666;
}

.gui-block-inner {
  background-color: #000000;
}

.gui-block-option {
  border-color: #d8d8d8;
  background-color: #f2f2f2;
}

.gui-block-option-block {
  border-color: #d8d8d8;
}

.gui-block-title strong {
  color: #ffffff;
}

.gui-line,
.gui-cart-sum .gui-line {
  background-color: #8c8c8c;
}

.gui ul.gui-products li {
  border-color: #b2b2b2;
}

.gui-block-subcontent,
.gui-content-subtitle {
  border-color: #b2b2b2;
}

.gui-faq,
.gui-login,
.gui-password,
.gui-register,
.gui-review,
.gui-sitemap,
.gui-block-linklist li,
.gui-table {
  border-color: #b2b2b2;
}

.gui-block-content .gui-table {
  border-color: #d8d8d8;
}

.gui-table thead tr th {
  border-color: #8c8c8c;
  background-color: #f2f2f2;
}

.gui-table tbody tr td {
  border-color: #d8d8d8;
}

.gui a.gui-button-large,
.gui a.gui-button-small {
  border-color: #ffffff;
  color: #2f1616;
  background-color: #ffffff;
}

.gui a.gui-button-large.gui-button-action,
.gui a.gui-button-small.gui-button-action {
  border-color: #8d8d8d;
  color: #000000;
  background-color: #fd2828;
}

.gui a.gui-button-large:active,
.gui a.gui-button-small:active {
  background-color: #cccccc;
  border-color: #cccccc;
}

.gui a.gui-button-large.gui-button-action:active,
.gui a.gui-button-small.gui-button-action:active {
  background-color: #ca2020;
  border-color: #707070;
}

.gui-input,
.gui-text,
.gui-select,
.gui-number {
  border-color: #faf5f5;
  background-color: #ffffff;
}

.gui-select .gui-handle,
.gui-number .gui-handle {
  border-color: #faf5f5;
}

.gui-number .gui-handle a {
  background-color: #ffffff;
}

.gui-input input,
.gui-number input,
.gui-text textarea,
.gui-select .gui-value {
  color: #000000;
}

.gui-progressbar {
  background-color: #76c61b;
}

/* custom */
<!DOCTYPE html>
<html>   
<head>
<script type="text/javascript" src="https://secure.data-ingenuity.com/js/266249.js" ></script>
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
  /*<link rel="stylesheet" href="https://www.3dinthebox-bv.webshopapp.com/w3css/4/w3.css">
  <link rel="stylesheet" href="/w3css">*/
/* Set the width of the sidebar to 0 and the left margin of the page content to 0 */
function closesidebar() {
  document.getElementById("flex@md") width : 0;
  document.getElementById("main") margin Left : 0;
}
<style>

  /*Joram, Lightspeed, 03-03-2021:, [Hide side menu category] BEGIN
div.flex@md
   { display: collapsed;
  }
/* Set the width of the sidebar to 0 (hide it) 
function closeNav() {
  document.getElementById("sidebar_panel").style.width = "0";
}*/
small {
  font-size: /*0.3em*/ 25px; 
}

/*Joram, Lightspeed, 03-03-2021:, [Hide side menu category] END*/

voor 1 kolom. Tekst onderaan. Centered. 
div.gallery {
  border: 1px solid #ccc;
  float: left;
  width: 180px;
}

div.gallery:hover {
  border: 1px solid #777;
}

div.gallery img {
  width: /*auto*/ 100%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

div.desc {
  padding: 20px;
  text-align: center;
}

/*max4 naast elkaar..
div.gallery1 {
  margin: 5px;
  border: 0px solid #ccc; /*gray 80%
  float: left;
  width: 300px;
}

div.gallery1:hover {
  border: 1px solid #777;
}

div.gallery1 img {
  height: 100%;
  width: auto;
}

div.desc1 {
  padding: 15px;
  text-align: center;
}*/

 /*{
  box-sizing: border-box;
}*/

.responsive {
  padding: 0 6px;
  float: left;
  width: 100% /*24,9999%*/;
}
 
@media only screen and (max-width: 2400px) {
  .responsive {
    width: 24,9999%; 
    margin: 6px 0;
  }
}

@media only screen and (max-width: 1200px) {
  .responsive {
    width: 24,9999%; 
    margin: 6px 0;
  }
}

@media only screen and (max-width: 700px) {
  .responsive {
    width: /*49.99999%*/ 23,98%;
    margin: 6px 0;
  }
}

@media only screen and (max-width: 500px) {
  .responsive {
    width: 100%; 
    margin: 6px 0;
  }
}

.clearfix:after {
  content: "";
  display: table;
  clear: both;
}

/*.button {
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}*/

.button {
  background-color: white; 
  border: 1px solid;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  -webkit-transition-duration: 0.4s; /* Safari */
  transition-duration: 0.4s;
}

/*.button20:hover {
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}*/

.button0 {
  background-color: white; 
  border: 0px solid;
  color: white;
}

.button1  
{ 
  background-color: white; 
  color: black; 
  border: 1px solid #4CAF50; /*green*/
 /* -webkit-transition-duration: 0.4s; /* Safari 
  transition-duration: 0.4s; */
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19); 
  }

.button2 {
  background-color: #DCDCDC; /*lightgray*/
  color: black; 
  border: 1px solid #008CBA; /*cyan*/
  font-size: 24px;
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}

.button3 {
  background-color: white; 
  color: black; 
  border: 1px solid #f44336; /*red*/
   -webkit-transition-duration: 0.4s; /* Safari */
  transition-duration: 0.4s; 
 box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
  }

.button4 {
  background-color: white;
  color: black;
  border: 1px solid #e7e7e7; /*gray*/
}

.button5 {
  background-color: white;
  color: black;
  border: 1px solid #555555; /*dark gray*/
   box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}

.button6 {
  background-color: #f5aa42; /*oranje*/
  color: white;
  font: black;
  border: 1px solid #555555;
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}

.button7 {
  background-color: #1dbf37; /*green*/
 color: white;
  font: white;
  border: 1px solid #555555;
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}

.button00:hover {
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
  background-color: green;
  color: white;
  border: 0px solid #555555;
}

.button11
{
    background: none;/*this for transparent button*/
    border: 1px solid black;/* this is for button border*/
    position: absolute;
    left: 15px;
    top: 8px;
}

/*<div class="img-overlay">
.img-overlay {
  position: relative;
  top: 300;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
}

.img-overlay:before {
  content: ' ';
  display: block;
  /* adjust 'height' to position overlay content vertically 
  height: 100%;
}

  <button class="btn btn-md btn-success">Test</button>
</div>*/

/*.transparent-button-box {
position: relative;}*/

.button9
/*.transparent-button-box 
.overlaybutton*/ {
position: relative;
background-color: none;
color: #ffffff;
opacity: 0.7;
/*filter: alpha(opacity=70);  For IE8 and earlier */
height: 188px;
vertical-align: middle;
text-align: center;
margin-top: -50px;
margin-left: -183px;
width: 300px;}

/*container voor overlay op foto
.container {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.container img {
  width: 100%;
  height: auto;
}

/* Style the button and place it in the middle of the container/image 
.container .btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  background-color: #f1f1f1;
  color: black;
  font-size: 16px;
  padding: 16px 30px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  text-align: center;
}

.container .btn:hover {
  background-color: black;
  color: white;
}

<div class="GoButton">GO</div>
.GoButton {
  position: absolute;
  width: 100px;
  background-color: transparent;
  border:solid 2px black; /*none
  top: 20px;
  right: 20px;
  text-align: center; padding: 0,5em;
  z-index: 500;
}*/

.GoButton:hover {
border: 2px inset navy;
}

/*tekst float right or left - groen*/
div.border {
  border: 3px solid #4CAF50; /*green*/
  padding: 8px;
}

.img1 {
  float: right;
  padding: 8px;
  background: #F8F8FF; /*light gray*/
}

.img2 {
  float: left;
  padding: 8px;
  background: #F8F8FF;
}

.img3 {
  float: right;
  padding: 8px;
}

.img4 {
  float: left;
  padding: 8px;
}

.img5 {
  float: center;
  padding: 8px;
}

.clearfix {
  overflow: auto;
}

/*tekst float right or left - geen rand; witte achtergrond*/
div.border1 {
  border: 0px;
  padding: 8px;
  background: #FFFFFF;
}

/*tekst float right or left - geen rand, lichte achtergrond*/
div.border8 {
  border: 0px;
  padding: 8px;
  background: #F5F5F5; /*lgray*/
}

/*tekst float right or left - blauw*/
div.border9 {
  border: 3px solid #1E90FF;
  padding: 8px;
  background: #F5F5F5; /*lgray*/
}

/*tekst float right or left - blauw met licht grijze achtergrond*/
div.border2 {
  border: 3px solid #1E90FF;
  padding: 8px;
}

/*tekst float right or left - red*/
div.border3 {
border: 3px solid #FF0000;
padding: 8px;
}

/*tekst float right or left - bruin-goud #B8860B*/
div.border4 {
border: 3px solid #D2691E;
padding: 8px;
}

/*tekst float right or left - grijs*/
div.border5 {
border: 3px solid #C0C0C0;
padding: 10px;
}

/*tekst float right or left - goud*/
div.border6 {
border: 3px solid #FFD700;
padding: 8px;
}
/* zelfde als 6 maar met smalle marge en dikkere boord*/
div.border7 {
border: 8px solid #FFD700;
padding: 50px;
}

/* tekst float right or left - d-groen*/
div.border10 {
border: 3px solid #555555;
padding: 8px;
}

/*tekst float right or left - grijs*/
div.border11 {
border: 3px solid #C0C0C0;
padding: 8px;
}

/*tekst float right or left - l-groen*/
div.border12 {
border: 3px solid #1dbf37;
padding: 8px;
}

/*2kolommen
div.2columns
{
  column-count:2;
  columns: 2 20em;
  column-rule: 1px solid grey;
  column-gap:50px;
}

div.4columns
{
  column-count: 4;
  columns: 4 20em;
  column-rule: 1px solid gray;
  column-gap: 50px
}*/

</style>
</head>
<noscript><img alt="" src="https://secure.data-ingenuity.com/266249.png" style="display:none;" /></noscript>

/*tabel responsive maken; vervang <tabel style> door 
<div class="table-responsive"><table class="table">.....</div>*/
</html>
