body {
    background-color: aliceblue;
}

h1 {
    color: brown;
    text-align: center;
}

h2, h3 {
    color: blue;
    text-shadow: 2px 2px darkgray;

}

header {
    background-color: lightslategray;
    color: white;
    padding: 20px 24px;
    border-radius: 8px 8px 0 0;
}

header pre {
    text-align: center;
}

#bgm {
    display: block;
    margin:  10px auto;
}

#header-column {
    display: flex;
    border: 1px solid black;
    justify-content: center;
    color: blue;
}

nav {
    background-color: lightgray;
    padding: 16px;
    margin-bottom: 10px;
}

a {
    text-decoration: none;
}

p {
    font-size: 1em;
    text-indent: 1em;
    line-height: 1.7em;
}

table {
    border-collapse: collapse;
}

th, td {
    padding: 8px 14px;
    border: 1px solid;
}

th {
    background-color: cornflowerblue;
    color: white;
}

img {
    border: 1px solid;
}

iframe {
    border: 1px;
    width: 600px;
    height: 500px;
}

footer {
    background-color: lightslategray;
    color: darkblue;
    padding: 10px 15px;
}

.other {
    display: inline-block;
    padding: 5px 10px;
}

.other p {
    text-shadow: 2px 2px darkgray;
}

#side-bar{
    display: flex;
    height: 100%;
}

#content-column{
    margin: 10px;
}