body {
    background-color: lightgray;
    margin: 8px;
}

h1 {
    text-align: center;
}

#main-panel {
    margin: 0em auto;
    width: 90%;
}

#form-box {
    margin: 0 auto;
    margin-bottom: 4px;
    width: 100%;
}

#button-box {
    margin: 0 auto;
    text-align: center;
}

input[type=button] {
    width: 10em;
    padding: 4px;
}

#src-box {
    margin: 1em auto;
    width: fit-content;
    height: fit-content;
}

#dest-box {
    margin: 1em auto;
    width: fit-content;
    height: fit-content;
}

#src {
    width: 128px;
    height: 128px;
    border: 8px ridge;
}

#src:hover {
    cursor: w-resize;
}

#dest {
    width: 128px;
    height: 128px;
    border: 8px ridge;
    display: block;
    margin: auto;
    background-color: darkgray;
}

#dest:hover {
    cursor: w-resize;
}

#button-box {
    text-align: center;
}

#message {
    font-size: 0.8em;
    color: blue;
    margin: 1em auto 2em auto;
    width: 32em;
}

#form-box table {
    margin: auto;
}

#footer {
    margin: auto;
    font-size: 0.8em;
    text-align: center;
    margin-top: 2em;
    padding-bottom: 2em;
}

tr {
    border: 1px solid;
}

td {
    border: 3px groove;
    padding: 4px 8px 4px 8px;
}

select {
    padding: 4px;
}

input[type=file] {
    padding: 4px;
    width: 80%;
}

.comment {
    font-size: 0.8em;
    color: green;
    margin-left: 1em;
}

#paste {
    text-decoration: none;
}