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;
}