body 
{
  font-family: 'Century Gothic', sans-serif;
  background-color: #3B4763;
}
  
header 
{
  background-color: #3B4763;
  font: #000000;
  padding: 10px;
}

footer
{
  text-align: center;
  font-size: 1.5em;
}

nav ul 
{
  list-style-type: none;
  margin: 0;
  padding: 0;
}
  
nav li 
{
  display: inline-block;
  margin-left: 3vw;
  margin-right: 3vw;
}
  
nav li a 
{
  color: #000000;
  text-decoration: none;
}
  
main 
{
  max-width: 100vw;
  margin: 0 auto;
  padding: 20px;
  background-color: #B6B9D6;
  border: 8px solid black;
  
}
  
section 
{
  margin-bottom: 20px;
}
  
label 
{
  display: block;
  margin-bottom: 5px;
}
  
input[type="text"],
input[type="password"] 
{
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
  margin-bottom: 10px;
}
  
input[type="submit"]
{
  background-color: #5A6987;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
  
input[type="submit"]:hover 
{
  background-color: #3B4763;
}

table 
{
  border-collapse: collapse;
}
  
table, th, td 
{   
  background-color: white;
  border: 2px solid black;
  padding: 8px;
}

.center-container 
{
  text-align: center;
}

.image-grid 
{
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  background-color: #000000;
  border: 8px solid black;
}

.image-item 
{
  width: 100%;
  height: 250px;
  object-fit: cover;
}