body{
    background-color: b7d7f3;
}
article{
    flex: 30%;
    margin: 10px;
    background-color: 4682b4;
    text-align: left;
    padding-left: 15px;
}
main{
    display: flex;
    flex-wrap: wrap;
}

table{
    padding: px;

}
tr th{
    padding: 10px;
    border: 1px solid black;    
    
}
nav{
    background-color: 4682b4;
    font-size: 5mm;
    color: white;
    padding: 15px;
    text-align: center;
}
header{ background-color:4682b4;
    margin: 10px;
    padding: 1px;
    text-align: center;
}
footer{
    background-color:4682b4 ;
    text-align: center;
    margin: 5px;
    padding: 10px;
}