css
body {
  background-color: #f2f2f2;
  font-family: 'Bloopa', sans-serif;
  margin: 0;
  padding: 0;
}

h1 {
  color: #ff69ff;
  text-align: center;
  font-size: 36px;
  font-weight: bold;
  border-bottom: 4px solid #000000;
  margin-bottom: 20px;
  padding-bottom: 20px;
}

h2 {
  color: #ff69ff;
  text-align: left;
  font-size: 24px;
  font-weight: bold;
  border-bottom: 4px solid #000000;
  margin-bottom: 10px;
  padding-bottom: 10px;
}

h3 {
  color: #ff69ff;
  text-align: center;
  font-size: 20px;
  font-weight: bold;
  border-bottom: 4px solid #000000;
  margin-bottom: 10px;
  padding-bottom: 10px;
}

a {
  text-decoration: none;
  color: #000000;
  font-weight: bold;
}

a:hover {
  color: #000000;
  text-decoration: none;
  background-color: #ff69ff;
  padding: 4px 6px;
  border: 2px solid #000000;
  border-radius: 4px;
  -webkit-transition: background-color 0.5s ease;
  transition: background-color 0.5s ease;
}

body p {
  font-size: 16px;
  line-height: 1.5;
  margin: 0 0 10px 0;
}

body div {
  padding: 20px;
  background-color: #f2f2f2;
  border: 2px solid #000000;
  border-radius: 4px;
  box-shadow: 0 0 10px #000000;
  width: 600px;
  margin: 20px auto;
}

body ul {
  list-style: none;
  padding: 0;
  margin: 0;
  list-style-type: none;
}

body li {
  padding: 10px 20px;
  background-color: #f2f2f2;
  border-bottom: 2px solid_goals #000000;
  margin: 10px 0;
}

body img {
  width: 100%;
  height: auto;
  display: block;
  margin:ประก 0 auto;
  padding: 0;
  border: 0;
}

body video {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  padding: 0;
  border: 0;
}

body iframe {
  width: 100%;
  height:ประก 100vh;
  display: block;
  margin: 0 auto;
  padding: 0;
  border: 0;
}