body {font-family: Calibri, Ariel, Verdana, sans-serif;}
  img {width:100px;}

  .flex-container1 {
  	display: flex;
  	height:300px;
  	justify-content: center;
  	align-items: center;
  	background-color: lightgreen;
  }
  .flex-container1 .ruta { background-color:white; width:100px;}
  
  .flex-container2 {
  	display: flex;
  	height:300px;
  	justify-content: space-around;
  	align-items: flex-start;
  	background-color: yellow;
  }
  .flex-container2 .ruta { background-color:red; width:100px; }
  .flex-container2 .ruta:nth-child(odd) { background-color:blue; align-self: flex-end;}
  
  .flex-container3 {
  	display: flex;
  	flex-direction: column;
  	height:500px;
  	justify-content: center;
  	align-items: center;
  	background-color:  lightgreen;
  }
  .flex-container3 .ruta { background-color:blue; width:300px; border:1px black solid; text-align:center;}

  .flex-container4 {
  	display: flex;
  	flex-direction: row;
  	flex-wrap: wrap;
  	width:800px;
  	height:300px;
  	justify-content: space-between;
  	/*align-items: stretch;*/
  	background-color:  white;
  	margin:auto;
  	border:5px green solid;
  }
  .flex-container4 .ruta { background-color:red; width:98px; height:98px; border:1px black solid; 
  	display:flex; justify-content: center; align-items: center; }
  .flex-container4 .spec { background-color:blue; width:298px; }
  .flex-container4  img {width:50px;}