#wrapper {
    width: 75%;
    margin: auto;
    background-color: #c8c0f4;
    text-align: center;
    justify-content: center;
}
header {
    display: flex;
    justify-content: center;
}
header > img {
    display: flex;
    background-color:#492994;
    width: 100%;
    margin: 0;
    padding: 0;
}
nav {
    display: flex;
    justify-content: center;
    text-align: center;
    flex: 1;
    text-decoration: underline;
}
nav > div {
    display: flex;
    margin: 0px;
    padding: 10px;
    font-size: 20px;
}
nav > div > a {
    font-weight:bold;
    text-decoration: none;
}
nav > div> a:hover {
    color: darkblue;
    text-decoration: underline;
}
body {
    font-family: 'Times New Roman', Times, serif;
    background-image: url('pixelcloudsnight.JPG');
    background-size: cover;
}
p {
    text-align: left;
}
ul {
    text-align: left;
}
main {
    padding: 40px;
}
main > ol {
    text-align: left;
}
footer {
    background-color: lightgray;
    margin: 1px;
    padding: 10px;
}
footer > p {
    text-align: center;
    justify-content: center;
    margin: auto;
}
table, th, td {
    border: 1px solid;
    padding: 1px;
    border-spacing: 1px;
    text-align: left;
    max-width: 50%;
    margin: auto;
}
.exampleimgs {
    max-width: 100%;
    height: auto;
}
.row {
    display: flex;
}
.column {
    flex: 33.33%;
    padding:5px;
}

@media screen and (max-width: 500px) {
    .column {
        width: 100%;
    }
}