html {
  height: 100%;
  width: 100%;
}

body {
  background-color: lightblue;
  line-height: 1.3em;
  width: 730px;
  margin: 0px auto;
}

p {
  text-indent: 1em;
}

img {
  display: block;
  text-align: center;
  max-width: 100%;
}

table {
  display: block;
  margin: 0.5em 0em 0.5em 0em;
  border: 1px black solid;
  border-collapse: collapse;
  width: 40em;
}

.title {
  padding: 10px;
  background-color: blue;
  color: gold;
  font-size: 3em;
  line-height: 1em;
  text-align: center;
}

.sub {
  font-size: 1.5em;
  line-height: 1em;
  margin-top: 0.5em;
  text-align: center;
}

h1 {
  font-size: 2em;
  line-height: 40px;
  color: purple;
  border-bottom: 2px purple solid;
  border-left: 40px purple solid;
}

h2 {
  font-size: 1.6em;
  line-height: 30px;
  border-bottom: 1px green solid;
  border-left: 30px green solid;
  margin-left: 40px;
}

h3 {
  font-size: 1.3em;
  text-align: center;
}

.box01 {
  border: 2px navy solid;
  padding: 1em;
}

.hide {
  color: white;
  background: white;
}

.bold_red {
  font-size: 1.1em;
  line-height: 1em;
  color: red;
  font-weight: bold;
}

.copyright {
  margin-left: 1em;
  text-indent: 0em;
  color: gray;
  background: lightgray;
  font-size: 0.8em;
  line-height: 1em;
}

@media screen and ( max-width: 480px ){
  body {
      width: 100%;
  }

  .title {
      padding: 5px;
      font-size: 3em;
  }
}