H1{font-size :100%;font-weight : normal;margin: 0px;padding: 0px;}

H2{font-size :100%;font-weight : normal;margin: 0px;padding: 0px;}


H3{font-size :100%;font-weight : normal;margin: 0px;padding: 0px;}


STRONG{font-size :100%;font-weight : normal;margin: 0px;padding: 0px;}
.ClassClass{
  color : #ffffff;
  background-color : maroon;
  vertical-align : middle;
  text-align : center;border-width : 1px 1px 1px 1px;border-color : maroon maroon maroon maroon;
  width : 150px;
  height : 1px;
  list-style-type : none;
}
.WakuClass{
  vertical-align : middle;
  text-align : center;
  border-left-width : 1px;
  border-left-color : maroon;
  width : 150px;
  height : 100px;
  list-style-type : none;
}
<title>行の高さ指定</title>
.line-height1 { line-height: 100% }
.line-height2 { line-height: 120% }
.line-height3 { line-height: 150% }
.line-height4 { line-height: 180% }

p {
  line-height: 150%;
}

body {
  margin: 0;
  padding: 0;
div#header {
  width;900px;
}
div#main {
  float: left;
  width: 70%;
  margin-left:0.5em;
}
div#menu {
  float: right;
  width: 25%;
  margin-left: 1em;
  padding: 0.5em;
  border-style: solid;
  border-color: darkred;
  border-width: 2px;
}
div#footer {
  clear: boty;
  width: 850px;
}
h4.date {
  color: white;
  background-color: mediumblue;
  border-width: 4px
}