header {
    background-color: #4682b4 ;
    text-align: center;
    margin: 20px;
    padding: 20px;
    margin-left: 380px;
    margin-right: 550px;
}

body {
    background-color: #b7d7f3;
    font-family: Arial, sans-serif;
    margin-top: 10px;
    margin-bottom: 10px;
}

.section1 {
    height: 400px;
    width: 300px;
    margin: 10px;
    background-color: #4682b4;
}

.section2 {
    height: 400px;
    width: 300px;
    margin: 10px;
    background-color: #4682b4;
}

.section3 {
    height: 400px;
    width: 300px;
    background-color: #4682b4;
    margin: 8px;
}

.section4 {
    width: 920px;
    background-color: #4682b4;
    margin: 8px;
    padding: 10px;
    right: 500px;
}


article {              
    display: flex;
    flex-wrap: wrap;
    background-color: white;
    width: 960px;
}

nav {
    background-color: #4682b4;
    margin: 15px;
    height: 60px;
    padding: 5px;
    text-align: center;
    margin-left: 380px;
    margin-right: 550px;
}


figcaption {
    font-size: small;
    float: left;
    margin-left: -20px;
}

table, th, td {
    border:2px solid black;
    height: 47px;
    border-collapse: collapse;
    text-align: center;
}
.main {
    width: 60%;
    margin: auto;    
    display: flex;
    flex-wrap: wrap;
}

footer { 
    background-color: #4682b4;
    padding: 10px;
    margin: 15px;
    text-align: center;
    margin-left: 380px;
    margin-right: 550px;
}

table {
    margin: auto;
}

.navtext {
    padding: 8px;
}

img {
    margin-left: -20px;
}

.pp {
    margin-left: 20px;
}