style.css

html {
    scroll-behavior: smooth;
}
a{
    color: #253659;
}
body {
    font-family: 'Montserrat', sans-serif;   
    color: #253659;
    padding: 0 !important;
}
#header-separator{
    margin: auto ;
    width: 30% ;
    border: none ;
    color: white ;
    background-color: white ;
    height: 5px ;
}
.section-separator{
    margin: auto !important;
    width: 25% !important;
    border: none !important;
    color: #253659 !important;
    background-color: grey !important;
    height: 7px !important;
}
header{
    margin-top: 0;
    padding-top: 15px;
    background-color: #BF665E;
    color: white;
    border: none;
}
header>div>nav {
    text-align: center;
}
nav>ul {
    display: inline-block;
}

nav>ul>li {
    display: inline;
}

nav>ul>li :hover {
    color: black;
    font-size: large;
}

nav>ul>li>a {
    text-decoration: none;
    color: white;
}

header>div>hr{
    width: 30%;
}
.headline{
    height: 350px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
header>div>h1 {
    text-align: center;
    font-weight: 500;
}

header>div>h3 {
    text-align: center;
    line-height:180%;    
    font-weight: 300;
}

header>div>p {
    text-align: center;    
    
}
.openSourceDiv{
    margin-top: 80px;
    margin-bottom: 80px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 150px;
    color: #253659;
}
section {
    width: 80%;
    margin: auto;
    margin-top: 150px ;   
    margin-bottom: 150px;
    text-align: center;
    border-radius: 10px;
    font-weight: 300;
}

section:nth-of-type(1){
    background-color: #253659;
    color: white;
    font-weight: bold;
    border-radius: 10px;
    width: 800px;
    margin-top: 0;
    padding: 30px;
}

section>h1{
    font-size: 3em;
    font-weight: 600;
    margin-bottom: 80px;
}

h4{
    font-weight: 600;
    font-size: 100%;
    margin-bottom: 20px;
}

.flex-container-vertical>h1{
    font-weight: 600;
}

.quote_block {
    text-align: center; 
    margin-left: 15%;
    margin-right: 15%;
    line-height: 180%;
    font-style: italic;    
}

.quote_block>h1{
    font-size: 180%;
    font-weight: 200;
    line-height: 180%;
}

.blocksatz>p{
    hyphens: auto;
    text-align: justify;    
    margin-left: 25%;
    margin-right: 25%;
}

.blocksatz>p>a>img{
    margin: 0 !important;

}

section>details>p{
    margin-left: 30px;
    margin-right: 30px;
    line-height: 130%;    
}

.body_list{
    list-style-type: disc;
    text-align: left;
    margin-left: 8%;
    margin-left: 5%;
    line-height: 180%;    
    font-weight: 600;
}

.flex-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.flex-container-vertical {
    display: flex;
    flex-direction: column;
    border-radius: 5px;
    margin: 20px;
    align-items: center;
}

/* === FLIP CARD STUFF https://www.w3schools.com/howto/howto_css_flip_card.asp === */
/* The flip card container - set the width and height to whatever you want. We have added the border property to demonstrate that the flip itself goes out of the box on hover (remove perspective if you don't want the 3D effect */
.flip-card {
    background-color: transparent;
    width: 350px;
    height: 200px;
    perspective: 1000px;    
    /* Remove this if you don't want the 3D effect */
}

/* This container is needed to position the front and back side */
.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;   
}

/* Do an horizontal flip when you move the mouse over the flip box container */
.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

/* Position the front and back side */
.flip-card-front, .flip-card-back {
    display: flex;
    align-items: center;
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    /* Safari */
    backface-visibility: hidden;
}

/* Style the front side (fallback if image is missing) */
.flip-card-front {
    
    justify-content: center;
    background-color: #253659;
    color: white;    
}

/* Style the back side */
.flip-card-back {
    background-color: #592E42;/* #BF665E; */
    color: white;
    transform: rotateY(180deg);
    font-weight: 400;    
}



/* === Slide show start  === */



.slideshow-button{
    color: black !important;
}



  /* === Slide show end === */


.icon{
    height: 60px;
}

  
section>details{
    margin: 20px;
    border-radius: 5px;
    font-weight: 300;
}

section>details>summary{
    margin: 10px;
    font-weight: 600;
}
.kurz-einmal-fuer-uebersicht{
    margin: 20px;
    border-radius: 5px;
}

/* === CSS Accordion https://codepen.io/raubaca/pen/PZzpVe === */ 


body {
    color: #253659;
    background: #ecf0f1;
    padding: 0 1em 1em;
}
h1 {
    margin: 0;
    line-height: 2;
    text-align: center;
}
h2 {
    margin: 0 0 0.5em;
    font-weight: normal;
}
input {
    position: absolute;
    opacity: 0;
    z-index: -1;
}
.row {
    display: flex;
}
.row .col {
    flex: 1;
}
.row .col:last-child {
    margin-left: 1em;
}
/* Accordion styles */
.tabs {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 4px -2px rgba(0, 0, 0, 0.5);
}
.tab {
    width: 100%;
    color: white;
    overflow: hidden;
}
.tab-label {
    display: flex;
    justify-content: space-between;
    padding: 1em;
    padding-left: 2em;
    padding-right: 2em;
    background: #2c3e50;
    font-weight: bold;
    cursor: pointer;
    
   /* Icon */
}
.tab-label:hover {
    background: #1a252f;
}
.tab-label::after {
    content: "\276F";
    width: 1em;
    height: 1em;
    text-align: center;
    transition: all 0.35s;
}
.tab-content {
    max-height: 0;
    padding: 0 1em;   
    color: #2c3e50;
    background: white;
    transition: all 0.35s;
}
.tab-close {
    display: flex;
    justify-content: flex-end;
    padding: 1em;
    font-size: 0.75em;
    background: #2c3e50;
    cursor: pointer;
}
.tab-close:hover {
    background: #1a252f;
}
input:checked + .tab-label {
    background: #1a252f;
}
input:checked + .tab-label::after {
    transform: rotate(90deg);
}
input:checked ~ .tab-content {
    max-height: 400vh;
    padding: 1em;
    padding-top: 3%;
    padding-bottom: 50px;
}



/*------------------------------------------------*/
 /* Tooltip container */
 .tooltip-native {
    position: relative;
    display: inline-block;
    border-bottom: 1px dotted black; /* If you want dots under the hoverable text */
  }
  
  /* Tooltip text */
  .tooltip-native .tooltiptext {
    visibility: hidden;
    width: 300px;
    background-color: #555;
    color: #fff;
    text-align: center;
    padding: 5px 0;
    border-radius: 6px;
  
    /* Position the tooltip text */
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -150px;
  
    /* Fade in tooltip */
    opacity: 0;
    transition: opacity 0.5s;
  }
  
  /* Tooltip arrow */
  .tooltip-native .tooltiptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #555 transparent transparent transparent;
  }
  
  /* Show the tooltip text when you mouse over the tooltip container */
  .tooltip-native:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
  } 

/*------------------------------------------------*/

.icons{
    margin: 50px;
    font-size: 100px;
    color: #253659;
}
.icons:hover{
    color: black;
}
footer{
    background-color: #592E42;    
    height: 120px;    
    color: #c4c4c4;
    display: flex;
    margin-top: 200px;
    margin-bottom: 0;
    text-align: center;
}

.license-footer{
    line-height: 2px;
    text-align: center;
    font-size: 0.8rem;
    color: #c4c4c4;
}


/*-------------------------------------------------*/
.btn-outline-success:hover{
    background-color: #BF665E;
    border-color: #BF665E;
}
.btn-outline-success{
    border-color: #2c3e50;
    color: #2c3e50;
    width: 200px;
}


.btn-links:hover{
    background-color:#253659;
    border-color: #253659;  
}

.btn-links{    
    border-color: #253659;    
    color: #253659;
    width: 400px;
}
/*---------------------------------------------*/


.link-row{    
    max-width: 75%;
    margin: auto;    
}

.link-container{
    padding-top: 40px;
    padding-bottom: 40px;
}

.link-row .col-link:last-child{
    margin-left: 0;
}


.row-spacer{
    padding-top: 30px;
}

.btn-call-to-action{
    margin-top: 40px;
    
    font-size: 140%;
    font-weight: 600;
}

.btn-footer{
    background-color: transparent; 
    border-color: #253659;
}

.btn-footer:hover{
    border-color: #253659;
    background-color: #4666A6;
}

/*--------------------*/



/*Eliminates padding, centers the thumbnail */


    
    /* Styles the thumbnail */
    
    a.lightbox img {
    height: 150px;
    border: 3px solid white;
    box-shadow: 0px 0px 8px rgba(0,0,0,.3);
    margin: 20px 20px 20px 20px;
    }
    
    /* Styles the lightbox, removes it from sight and adds the fade-in transition */
    
    .lightbox-target {
    position: fixed;
    top: -100%;    
    background: rgba(0,0,0,.7);
    width: 80%;
    opacity: 0;
    -webkit-transition: opacity .5s ease-in-out;
    -moz-transition: opacity .5s ease-in-out;
    -o-transition: opacity .5s ease-in-out;
    transition: opacity .5s ease-in-out;
    overflow: hidden;
     
    }
    
    /* Styles the lightbox image, centers it vertically and horizontally, adds the zoom-in transition and makes it responsive using a combination of margin and absolute positioning */
    
    .lightbox-target img {
    margin: auto;
    position: absolute;
    top: 0;
    left:0;
    right:0;
    bottom: 0;
    max-height: 0%;
    max-width: 0%;
    border: 3px solid white;
    box-shadow: 0px 0px 8px rgba(0,0,0,.3);
    box-sizing: border-box;
    -webkit-transition: .5s ease-in-out;
    -moz-transition: .5s ease-in-out;
    -o-transition: .5s ease-in-out;
    transition: .5s ease-in-out;
      
    }
    
    /* Styles the close link, adds the slide down transition */
    
    a.lightbox-close {
    display: block;
    width:50px;
    height:50px;
    box-sizing: border-box;
    background: white;
    color: black;
    text-decoration: none;
    position: absolute;
    top: -80px;
    right: 0;
    -webkit-transition: .5s ease-in-out;
    -moz-transition: .5s ease-in-out;
    -o-transition: .5s ease-in-out;
    transition: .5s ease-in-out;
    }
    
    /* Provides part of the "X" to eliminate an image from the close link */
    
    a.lightbox-close:before {
    content: "";
    display: block;
    height: 30px;
    width: 1px;
    background: black;
    position: absolute;
    left: 26px;
    top:10px;
    -webkit-transform:rotate(45deg);
    -moz-transform:rotate(45deg);
    -o-transform:rotate(45deg);
    transform:rotate(45deg);
    }
    
    /* Provides part of the "X" to eliminate an image from the close link */
    
    a.lightbox-close:after {
    content: "";
    display: block;
    height: 30px;
    width: 1px;
    background: black;
    position: absolute;
    left: 26px;
    top:10px;
    -webkit-transform:rotate(-45deg);
    -moz-transform:rotate(-45deg);
    -o-transform:rotate(-45deg);
    transform:rotate(-45deg);
    }
    
    /* Uses the :target pseudo-class to perform the animations upon clicking the .lightbox-target anchor */
    
    .lightbox-target:target {
    opacity: 1;
    top: 0;
    bottom: 0;
      overflow:scroll;
    }
    
    .lightbox-target:target img {
    max-height: 100%;
    max-width: 100%;
    }
    
    .lightbox-target:target a.lightbox-close {
    top: 0;
    }