body{
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
}

header{
    background-color: #333;
    color: white;
}

nav ul{
   list-style: none;
   display: flex;
   justify-content: space-around;
   padding: 0;
   margin: 0; 
}

nav ul li a{
    color:white;
    text-decoration: none;
    padding: 15px 20px;
    display: block;
}

nav ul li a:hover{
    background-color: #575757;
}

main{
    display: flex;
    flex-direction: row;
    min-height: 80vh;
}

section{
    flex: 3;
}

section iframe{
    width: 100%;
    height: 100%;
    border: none;
}

aside{
    flex:1;
    background-color: #f4f4f4;
    padding: 20px;
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.1);
}

footer{
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0px;
}

.img_rel{
    width: 160px;
    height: 160px;
    border-radius: 80px;
}

table{
    width: 100%;
    text-align: center;
}