body {
    background-color:#1F1A18; 
    font-family: 'Courier New', Courier, monospace, Arial, sans-serif;
    margin: 20px;
    display: flex;
    justify-content: center;
}

.web-container {
    width:1000px;
    background-color:#F2EADF;
    border: 4px double #3182ce; 
    box-sizing: border-box;
}

.header {
    background-color:#5F6EA8; 
    color: white;
    padding: 40px 15px;
    font-size: 60px;
    font-weight: bold;
    border: 2px solid #33402F;
    margin-bottom: 15px;
    background-image: url(img/pata.jpg);
    display: none;
    justify-content:space-between;
    align-items: center;
}

.header-gif {
    width: 180px;
    height: 180px;
    border: 2px solid white;
    background: #ffffff88;
    padding: 4px;
}

.header-gif img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.main-content {
    display:flex;
    flex-direction: row; 
    align-items: flex-start;
    gap: 15px;
    width: 100%;
}

.sidebar{
  width:220px;
  flex-shrink:0;
  border:3px solid #33402F;
  padding:10px;
}

.sidebar-title{
  text-align:center;
  background-color: #ffffff; 
  border:1px solid #cbd5e0;
  padding:5px;
  font-size:14px;
  margin-bottom:10px;
  font-weight: bold;
}

.nav-button{
  display: block;
  width: 100%; 
  box-sizing: border-box;
  margin-bottom: 8px;
  padding: 8px;
  color: #ffffff;
  text-shadow: 1px 1px 2px #000;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
  border: 2px outset #63b3ed;
  background-color: #5F6EA8; 
    background-image: url('img/pato.jpg'); 
    background-repeat: repeat;
}

.nav-button:hover {
    border: 2px inset #1a5276;
    background-color: #4B5A43;
}

.sidebar-image-box {
    margin-top: 15px;
    border: 3px double #2b6cb0;
    background-color: #ebf8ff;
    padding: 10px;
    text-align: center;
    box-sizing: border-box;
}

.sidebar-image-box img {
    width: 100%;
    height: auto;
    display: block;
}

.content-box {
    flex-grow: 1;
    width:calc(100% - 235px); 
    border: 3px solid #3182ce; 
    padding: 4px;
    background-color: #2b6cb0;
    box-sizing: border-box;
    min-height:600px;
}

.content-inner {
    background-color: #F2EADF; 
    border: 2px solid #3182ce; 
    padding: 20px;
    height: 480px;
    overflow-y: scroll;
    font-size: 13px;
    line-height: 1.5;
    color: #2d3748;
}

.content-inner::-webkit-scrollbar {
    width: 16px;
}

.content-inner::-webkit-scrollbar-track {
    background: #edf2f7;
    border-left: 1px solid #3182ce;
}

.content-inner::-webkit-scrollbar-thumb {
    background: #2b6cb0;
    border: 2px solid #edf2f7;
}