body {
 	 font-family: 'Roboto', sans-serif;
	 font-size: calc(14px + (18 - 14) * ((100vw - 320px) / (1600 - 320)));
  margin: 0;
  background-color: #1ab068;
  color: #fff;
}

img{
	max-width:100%;
	height: auto;
	border-radius: 15px;
}
header, footer {
  background-color: #00be66;
  color: white;
  text-align: center;
  padding: 1em;
}

.container {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1em;
  gap: 1em;
}

.left-sidebar,
.right-sidebar {
  width: 23%;
  padding: 1em;
  background-color: #179354;
  box-sizing: border-box;
} display: flex;
 
.main-content {
  width: 50%;
  padding: 1em;
  background-color: #179354;
  box-sizing: border-box;
}
.main-content-anzeige {
  width: 100%;
  padding: 1em;
  background-color: #179354;
  box-sizing: border-box;
}
h1, h2, h3 {
  color:#000080;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  margin-bottom: 2px;
}

a {
  color: white;
  text-decoration: none;
  font-family: 'Roboto', sans-serif;
	font-size: calc(10px + (12 - 10) * ((100vw - 320px) / (1600 - 320)));
	margin-bottom: 2px;
}
a.liste {
  color: white;
  text-decoration: none;
  font-family: 'Roboto', sans-serif;
	font-size: calc(10px + (12 - 10) * ((100vw - 320px) / (1600 - 320)));
	border-radius: 18px;
	background-color: red;
	margin-bottom: 2px;
	display:block;
	text-align:center;
	padding:3px;
}
a.links{
	display: block;
	 font-family: 'Roboto', sans-serif;
	 font-size: calc(14px + (18 - 14) * ((100vw - 320px) / (1600 - 320)));
	border-radius: 10px;
	float: left;
	width: 96%;
	background-color: #008000;
	color: White;
	text-align: center;
	text-decoration: none;
	margin: 4px;
	margin-top: 20px;
}
a:hover {
  text-decoration: underline;
}

.cta-button {
  display: inline-block;
  background-color: #e60073;
  color: white;
  padding: 0.6em 1.2em;
  text-decoration: none;
  border-radius: 4px;
  margin-top: 1em;
}

.ad-block {
  margin-top: 4em;
}

.ad-block img {
  width: 100%;
  height: auto;
  display: block;
}

details summary {
  cursor: pointer;
  margin-top: 1em;
  font-weight: bold;
}

footer nav a {
  color: #fff;
  margin: 0 0.5em;
  text-decoration: underline;
}
.ads-feed {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  margin-top: 1em;

}

.ad-card {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 1em;
  width: calc(50% - 1em);
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
  font-size: calc(12px + (14 - 12) * ((100vw - 320px) / (1600 - 320)));
  color:#000000;
}
.ad-anzeige {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 1em;
  width: calc(100% - 1em);
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
  font-size: calc(12px + (14 - 12) * ((100vw - 320px) / (1600 - 320)));
  color:#000000;
}

.ad-card img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin-bottom: 0.5em;
}
.text-klein{
	font-family: 'Roboto', sans-serif;
  font-size: calc(10px + (12 - 10) * ((100vw - 320px) / (1600 - 320)));
	
	
}
.eindrittel{
	float:left;
	width:30%;
	margin-right:5px;
	text-align:center;
}
.zweidrittel{
	float:left;
	width:96%;
}
img.um-keinbild{
	max-width:40%;
	height:auto;
}
.platzhalter-rechts{
	height:100%;
	display:block;
}
.file{
	 width: 100 %;
	margin-bottom:20px;
	  background-color: blue;
}
@media (max-width: 768px) {
  .ad-card {
    width: 100%;
  }
}

@media (max-width: 900px) {
  .container {
    flex-direction: column;
  }

  .left-sidebar,
  .right-sidebar,
  .main-content {
    width: 100%;
  }
}