body
{
  font-family: '標楷體', 'Arial', sans-serif;
  background-color: #f8f9fa;
  color: #000000;
  margin: 0;
  padding: 0;
}

h1
{
  text-align: center;
  margin-top: 20px;
  color: #000000;
}

header
{
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 20px 0;
}

button
{
  padding: 10px 20px;
  margin: 0 5px;
  border: none;
  border-radius: 5px;
  background-color: #cccccc;
  color: #000000;
  cursor: pointer;
  transition: background-color 0.3s;
  font-family: '標楷體', 'Arial', sans-serif;
  font-size: 17px;
}

button:hover
{
  background-color: #aaaaaa;
}

main
{
  text-align: center;
  padding: 20px;
}

img.image
{
  max-width: 50%;
  max-height: 80vh;
  height: auto;
  width: auto;
  border: 1px solid #ced4da;
  border-radius: 10px;
  margin: 20px 0;
}

h3
{
  font-weight: normal;
}