my.css

ul {
  margin: 0;
  background-color: rgba(252, 250, 250, 1);
}

li {
  font-weight: 300;
  background-color: rgba(252, 250, 250, 1);
  margin: 0;
  font-size: 19px;
}

ul.menu {
  background-color: white;
  text-align: center;
  margin: 220px auto 0 auto;
  padding: 10px;
  list-style: none;
  max-width: 750px;
}
li.menu {
  font-weight: 300;
  background-color: white;
  line-height: 1.5em;
  font-size: 25px;
  list-style: none;
  padding-left: 0.5em;
  padding-right: 0.3em;
  display: inline;
  margin: 0 5px;
}
li.menu_last {
  font-weight: 300;
  line-height: 1.5em;
  font-size: 25px;
  list-style: none;
  padding-left: 0.5em;
  padding-right: 0.3em;
  display: inline;
  margin: 0 20px;
}
.menu_selected {
  font-weight: bold;
}

a {
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

pre {
  padding: 4px;
  background-color: #eee;
  border: 1px solid #ccc;
}

* > code {
  padding: 1px;
  background-color: #eee;
  border: 1px solid #ddd;
}

pre > code {
  padding: 0px;
  background-color: transparent;
  border: none;
}


.header {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 100vw;
  padding: 10px 0;
  background-color: #bab;
  text-align: center;
}
.logo1 {
  display: none;
  font-weight: bold;
  font-size:36px;
}
.logo2 {
  display: none;
}
.header img {
  border-radius: 0%;
  width: 374px;
  height: 200px;
}

a.header, a.header:visited, a.header:active, a.header:hover { color: #000 }

body {
  overflow-x: hidden;
  max-width: 750px;
  margin: 10px auto;
  font-family: Roboto, sans-serif;
  padding-left: 1.8em;
  padding-right: 1.8em;
  background-color: #FFF;
}

hr {
  height: 1px;
  background-color: #ccc;
  border: none;
}

.footer_date {
  text-align: center;
  font-style: italic;
  font-size: small;
}

.costlist {
  border-spacing: 4px;
}
.costlist > thead > th {
  border-bottom: 1px solid #666;
}
.costlist > tr > td {
  padding-right: 0.5em;
}

/*
.ref_top {
  border-top: 1px solid #666;
}
.ref_precise .ref_subject {
  padding: 0px;
  margin: 0px;
}
*/

h1 {
  font-weight: 800;
  box-shadow: 10px 10px #bab;
  padding: 2px 10px;
  background-color: #f0f0f0;
  color: Black;
}

h2, h3, h4, h5, h6 {
  font-weight: 800;
  box-shadow: 7px 7px #bab;
  padding: 2px 10px;
  display:inline-block;
}

p {
  font-weight: 300;
  padding: 10px;
  background-color: rgba(252, 250, 250, 1);
  margin: 0;
  font-size: 19px;
}


em {
  font-family: serif;
}

dir.top {
  margin: 0.8em;
  padding: 0px;
}

dir.reply {
  margin-top: 0.1em;
  margin-bottom: 0px;
}

form.belownav {
    padding-bottom: 0px;
    margin-top: -0.5em;
    margin-bottom: -1.2em;
    text-align: right;
    font-size: 12px;
}

button.belownav {
    font-size: 12px;
}