body {
    background-image: url("bgspace.png");
    background-color: #000;
    color: #ff8900;
    text-shadow: 2px 1px #000, 2px 1px 10px;
    margin: auto;
    padding-left: 1em;
    padding-right: 1em;
    max-width: 50em;
    background-attachment: fixed;
}

#nav {
    background: #000;
    box-shadow: 0 0 100px #f9690e;
    border-left: 1px solid darkgreen;
    border-right: 1px solid darkgreen;
    border-bottom: 1px solid darkgreen;
}

#nav a {
    color: #3333ff;
    text-decoration: none;
    outline: inherit;
}

#nav a:active {
    color: red;
    text-decoration: none;
    outline: inherit;
}

#nav a:visited {
    color: red;
    text-decoration: none;
    outline: inherit;
}

.black {
     background-color: black;
     padding-left: 10px;
     padding-right: 10px;
     border: 1px solid red;
     box-shadow: 5px 5px 0 red;
}

.black2 {
    background-color: black;
    padding-left: 10px;
    padding-right: 10px;
    border: 1px solid orange;
    box-shadow: 4px 4px 0 orange;
}

.black a {
    color: red;
}

#logo {
    float: left;
    padding-right: 1em;
}

h1 {
    background-color: #000;
}

h1:after {
  content: " ♡";
  animation: blink 1s infinite;
}

@keyframes blink {
  from,
  to {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}

#medida {
    text-align: right;
}