* {
  transition: all 0.25s;
}

body {
  margin: 0;
  padding: 0;
  background: #ffffff00;
  /*background-color: white;
  background-image: url(img/fondo.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;*/
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-size: 120%;
}

#encabezado {
  width: 80vw;
  min-height: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background: white;
  
  border-radius: 10px;
  margin: 10px;
  padding: 10px;
      border: outset;
    border-color: #1e4388;
}

.opcion {
  text-align: center;
  width: 70vw;
  background: white;
 /* width:"480";
  height:"380";
  */
  
  border-radius: 10px;
  margin: 20px;
  padding: 10px;
  cursor: pointer;
  border: outset;
    border-color: #1e4388;
}

.opcion:hover{
     background: lightgray;
}