body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: floralwhite;
    margin: 0;
    color: black;
    padding: 0;
}

header {
    background-color: #151fb0;
    color: white;
    text-align: center;
    padding: 10px;
    top: 0;
    z-index: 1000;
    position: sticky;
}

header h1 {
    margin-top: 0;
}

nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 25px;
}

nav a {
    text-decoration: none;
    color: white;
    font-weight: bold;
    padding: 5px;
}

nav a:hover {
    background-color: rgb(186, 186, 255);
    color: #0c1154;
    padding: 5px;
    border-radius: 5px;
}

main {
    display: flex;
    height: auto;
}

main section {
    flex: 3;
    background-color: rgb(223, 232, 253);
    padding: 50px;
    box-shadow: 0 4px 10px rgba(0,0,0,1);
}

main aside {
    
    background-color: rgb(225, 241, 255);
    
    box-shadow: 0 4px 10px rgba(0,0,0,1);
}

form label, input {
    display: block;
    margin-bottom: 15px;
}

form fieldset {
    display: flex;
}

form fieldset input, label {
    margin-right: 15px;
}

footer {
    background-color: #151fb0;
    color: white;
    text-align: center;
    padding: 10px;
}

aside {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  background: rgb(225, 241, 255);  
  transition: all 0.3s ease;
  z-index: 1000;
} 
aside:target {
    display: block;/* activa o desactiva */
}
 .cerrar {
  display: inline-block;
  background: #ff3b3b;
  color: white;
  padding: 8px 12px;  
  text-decoration: none;
  font-weight: bold;  
}

.cerrar:hover {
  background: #cc0000;
}