html body {
  padding: 0;
  margin: 0;
  font-family:'Microsoft JhengHei', '微軟正黑體', 'Microsoft YaHei', sans-serif;
  color:  #4B5057;
  width: 100vw;
  height: 100vh;
}

header {
  margin: 0 auto;
  height: auto;
  width: 95%;
}

#logo {
  width: 32vw;
  min-width: 380px;
  margin: 0 auto;
  padding: 1em auto;
  text-align: center;
}

header, footer, article {
  width: 95vw;
  padding: 0;
  margin: 0 auto;
  max-width: 1024px;
  display: block;
}

.center {
  text-align: center;
}

.left {
  text-align: left;
}

.right {
  text-align: right;
}

.topmenu {
  width: 100%;
  padding: 1%;
  margin: 0;
  border-top: 1px solid #4B5057;
  border-bottom: 1px solid #4B5057;
  text-align: left;
  
}

.topmenu div {
  text-align: center;
  padding: 0;
  margin: 0;
}

.topmenu a {
  margin: 3px;
  padding: 0;
  text-decoration: none;
  color: #4B5057;
}

.topmenu a:hover {
  margin: 3px;
  padding: 0;
  font-weight: bold;
  color: #007bff;
}

.content {
  margin: 0;
  padding: 5% 0%;
  line-height: 1.3em;
  min-height: 60vh;
  height: auto;
}


.content ul li {
  list-style-type: none;
  padding: 0 3px 0 3px;
  text-align: left;
}

.sticky {
  position:fixed;
  top: 0;
  margin: 0 auto;
  padding: 0 auto;
  left: -20%;
  right: -20%;
}


.sticky + .content {
  padding-top: 0;
  padding-left: 5%;
  padding-right: 5%;
  margin: 0;
  background-color: #FFF;
}

.footer {
  margin: 0;
  padding: 0;
  border-top: 1px solid #000;
  height: 16vh;
  
}

.footer ul {
 width: 75%;
 list-style: none;
 padding: 0.3em;
 margin: 0 auto;
 font-size: 0.95em;
 text-align: justify;
}

.footer ul li {
  text-align: center;
  padding: 0;
  margin: 0;
}

.footer ul li span {
 display: inline;
}