@import url("https://fonts.googleapis.com/css?family=Nunito:400,700&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #fdfdfd;
  font-family: "Nunito", sans-serif;
  font-size: 1rem;
  box-shadow: 0 10px 0 0 #ff6873 inset;  
}

/* Make content area fill the entire browser window */
html,
.fullscreen {
  display: flex;
  height: 100%;
  margin: 0;
  padding: 0;
  width: 100%;
}

/* Center the content in the browser window */
.container {
  margin: auto;
  text-align: center;
}

.title {
  font-size: 3rem;
}

main {
  width: 90%;
  margin: auto;
  margin-top: 25px;/* weil sonst mittig zentriert*/
  padding: 0.5rem;
  text-align: center;
}

.pwabtn{
	width: 90%;
	max-width: 500px;
	border-radius: 6px;
	cursor: pointer;
	border: 1px #222 solid;
	padding: 15px;
	background-color: #00BFFF;
	color: #fff;
	font-size: 1.25rem;
}

.pwabtn:hover{
	background-color: #555;
	color: #fff;
}


nav {
  /*display: flex;*/
  justify-content: space-between;
  align-items: center;
  position: fixed;
  bottom: 0px;
  /*background-color: #FFFF00;*/
  /*padding-bottom: 20px;*/
  /*padding-top: 20px;*/
  color: #000;
  width: 100%;
}

ul {
  list-style: none;
  margin-right: auto;
  margin-left: auto;
}

nav ul li a{
    display: block;
    width: 33.33%;
    float: left;
    text-align: center;
    background-color: #fff;
    color: #000;
    padding: 25px;
    text-decoration: none;
}

nav ul li a.navitem-1{
    background-color: #aaa;    
}
nav ul li a.navitem-2{
    background-color: #ccc;    
}
nav ul li a.navitem-3{
    background-color: #eee;    
}

h1 {
  color: #555;
  margin-bottom: 0.5rem;
}

.container {
    /*display: grid;*/
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    grid-gap: 1rem;
    justify-content: center;
    align-items: center;
    margin: auto;
    padding: 1rem 0;
}

.embed-container {
  position: relative; 
  padding-bottom: 56.25%; /* ratio 16x9 */
  height: 0; 
  overflow: hidden; 
  width: 100%;
  height: auto;
}
.embed-container iframe {

  position: absolute; 
  top: 0; 
  left: 0; 
  width: 100%; 
  height: 100%; 
}
/* ratio 4x3 */
.embed-container.ratio4x3 {
  padding-bottom: 75%;
}