* {
-webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */
-moz-box-sizing: border-box;    /* Firefox, other Gecko */
    box-sizing: border-box;
}

body{
  background-color: #023;
  font-family: Tahoma, Geneva, sans-serif;
  line-height: 1.5em;
  padding: 0;
  margin: 0;
  font-size: 16px;
}

a{
  color: #26a;
}

a:hover{
  color: #48d;
}

#head img{
  height: 3em;
  display: block;
  margin: auto;
}

#head h1{
  padding-top: 0.5em;
  margin-top: 0;
  margin-bottom: 0.5em;
  line-height: 1em;
  font-size: 1.2em;
  text-align: center;
}

#head::after{
  content: "";
  display: table;
  clear: both;
}

#main{
  background-color: #ccd;
  width: 100%;
}

#sidebar{
 padding: 1em;
 border-radius: 1em;
 margin-bottom: 0.5em;
 background-color:#dde;
}

#head, #main > div, #foot{
  margin: auto;
  padding: 1em;
  overflow: auto;
}

#head, #foot{
  color: #ccd;
}

#main > div{
  background-color: #fff;
  color: #023;
}

/*#main p:not(.seminar){
  text-align: justify;
}*/

#main ul{
  padding-left: 1.5em;
}

#main li{
  list-style-type: square;
}

.seminar{
  padding: 1em;
  border-radius: 1em;
  background-color:#dde;
}

.stitle{
  font-size: 1.2em;
  margin-bottom:2em;
  line-height: 1.5em;
}

@media (min-width: 500px) {
  #head img{
    float: right;
    height: 4em;
  }
  #head h1{
    font-size: 1.5em;
    text-align: left;
  }
}

@media (min-width: 600px) {
  #sidebar{
    float: right;
    margin-left: 1em;
    width:40%;
  }
  #sidebar + p{
    margin-top: 0;
  }
  .stitle{
    font-size: 1.5em;
  }
}

@media (min-width: 750px) {
  #head h1{
    font-size: 2em;
  }
}

@media (min-width: 900px) {
  #head, #main > div, #foot{
    width: 75%;
  }
}