*{
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
/* body{
  background: #313D52;
} */

.navegacion{
  width: 1200px;
  margin: 15px auto;
  background:lightskyblue;
}
.navegacion ul{
 list-style: none;
}

.menu {
    position:relative; 
    z-index:99;
}
.menu > li{
  position: relative;
  display: inline-block;
 } 
 .menu > li > a{
   display: block;
   padding: 15px 20px;
   color: black;
   font-family: 'Open Sans' ;
   text-decoration: none;
 } 

 .menu li a:hover {
color: white;
transition: all .3s;
}

.submenu{
  position: absolute;
  background: lightskyblue;
  width: 120%;
  visibility: hidden;
  opacity: 0;
  transition: opacity 1.5s;
  }

  .submenu li a{
    display: block;
    padding: 15px;
    color: black;
    font-family:'Open Sans' ;
    text-decoration: none;
    }

    .menu li:hover .submenu{
      visibility: visible;
      opacity: 1; 
      }

.circulo{
background-color: blue;
width: 150px;
height: 150px;
border-radius: 50%;
display: flex;
justify-content: center;
align-items: center;
text-align: center;
margin:0px auto;
padding:3%
border: black;
}
/*.circulo > h2{
  font-family: sans-serif;
  color: white;
  font-size: 1.4rem;
  font-weight: bold;
background-color: blue;
width: 150px;
height: 150px;
border-radius: 50%;
display: flex;
left:4px;
justify-content: center;
align-items: center;
text-align: center;
margin:0px auto;
padding:3%
border: black;
}
*/



.circulo > .imagen{
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

/* antes

header{
  font-family: sans-serif;
  width: 480px;
  margin: 0 auto;
}
ul{
  list-style: none;
}
#menu li>a{
  background-color: rgb(21, 114, 168);
  color: white;
  text-decoration: none;
}