body {
  font-family:Arial, sans-serif;
  margin:0 auto;
  background-color:#f9f9f9;
  max-width:1024px;
}
h1 {
    font-size: 1.3em;
    margin: 4px;
    padding: 4px;
    background-color: #f75151;
    color: #f9f9c7;
    text-align: center;
}

h2 {
    font-size: 1.3em;
    margin-left: 10%;
}
h3 {
  padding-left: 4%;
  color: #0039ff;
}
p {
    line-height:1.3em;
    text-align:justify;
}
header {
    background-color: #fe3232;
    color: #fcf37c;
    padding: 4px;
    border-top: 2px inset;
    max-width: 1024px;
    text-align: center;
}

nav {
  background-color: #ffefdb;
  border-bottom: 2px inset #aec105;
  border-top: 2px inset;
}

nav ul {
  list-style-type:none;
  margin:2px;
  padding:0;
  overflow:hidden;
}
nav ul li {
  float:left;
  padding:0;
}
li {
  padding: 5px;
  line-height: 1.5em;
}
nav ul li a {
  display:block;
  text-align:center;
  margin:4px;
  border-radius:4px;
  padding:2px 10px;
  text-decoration:none;
}
nav ul li a:hover {
  background-color:#f80606;
  color: yellow;
}
main {
  position: relative;
}

pre {
    color: white;
    font-size: 1.2em;
    line-height: 1.6em;
    padding: 10px;
    font-weight: bold;
    border: 1px inset;
    background-color: #0039ff;
    padding-left: 4%;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}
table, th, td {
  border: 1px solid black;
}
th, td {
  padding: 8px;
  text-align: left;
}
th {
  background-color: #f2f2f2;
}
footer {
    background-color: #ebebed;
    color: #696a6d;
    text-align:center;
    padding:5px;
    border-top: 1px inset;
}
section {
  border: 1px inset;
  background-color: #e3e3dc;
  padding: 10px;
  position: relative;
  border-radius: 4px;
  margin: 1em 0;
}

#bloke-menus {
  opacity: .8;
  border-radius: 4px;
  border: 1px solid white;
  background-size: 100% 100%;
  opacity: 0.8;
  padding: 7px;
}
#bloke-menus ul {
    list-style-type: disclosure-closed;
    padding: 1em;
    margin: 0;
    border-bottom: 1px inset black;
}
#bloke-menus ul li {
  float: right;
  padding: 2px 4px;
  width: 48%;
}
#bloke-menus ul li a {
  text-decoration: none;
  font-size: 0.8em;
  color: #000000;
  font-weight: bold;
}
#bloke-menus ul li a:hover {
color: red;
font-style: oblique;
font-weight: bold;
}
#bloke-menus ul li a:visited {
color: gray;
font-style: oblique;
}
button {
  cursor: pointer;
  margin-left: 4%;
  border: 1px outset #f9fac9;
  border-radius: 2px;
  float: right;
  color: #ffffff;
  border-radius: 4px;
  font-weight: bold;
  font-size: 1em;
  padding: 3px 7px;
  background-color: #fe3232;
}

button:hover {
  text-shadow: none;
  background-image: linear-gradient(45deg, #e70f0f, #f1cfcf);
  color: yellow;
}

.clean {
clear: both;
height: 2px
}
@media screen and (max-width:600px) {
#bloke-menus ul li {
  width: 86%;
}
}
img {
  width: 99%;
  height: auto;
}
.boton-inicio {
    float: right;
    text-decoration: none;
    margin-right: 2%;
    color: white;
    font-weight: bold;
    margin-top: -1.75em;
}
.back-container {
        margin-top: 20px;
        text-align: center;
    }
    
.back-button {
  display: inline-block;
  padding: 7px 12px;
  background-color: #007bff;
  color: white;
  border: 1px outset;
  float: right;
  text-decoration: none;
  margin-right: 2em;
  font-weight: bold;
  border-radius: 5px;
  transition: background 0.5s ease;
  margin-bottom: 2em;
}

    .back-button:hover {
        background-color: #0056b3;
    }