* {box-sizing: border-box;}
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;  
  background: rgb(223, 228, 214);
 /* background: rgb(231, 241, 248);*/
  color:black;
}
div#main {
margin: 20px auto;
max-width:900px;
}
a {
  color:rgb(48, 143, 211);
  text-decoration: none;
}
a:hover {color: rgb(110, 176, 223);}
ul.menu {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: rgb(181, 224, 255);
}
ul.menu li {float: left; width:25%;}
ul.menu li a {
  display: block;
  font-size: 20px;
  color: black;
  text-align: center;
  padding: 22px 0px;
  text-decoration: none;
}
ul.menu li a:hover:not(.active) {background-color: rgb(198, 231, 255);}
ul.menu li a.active {background-color: rgb(140, 196, 236);}

div.head {
  position: relative;
  width: 100%;
  text-align:center;
}
div#headbg {
  position: absolute;
  bottom: 0;
  height:150px;
  width:100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(255, 255, 255, 0.8);
  }
span#headline {
font-size:40px;
color:rgb(0, 0, 0);
margin:0;
/*
transform: translate(-50%,0%);
left: 50%;
position: absolute;
bottom:10px;
*/
}
div.content {
  font-size: 20px;
  line-height: 1.6;
  background-color: white;
  padding: 40px 80px;
}
@media screen and (max-width: 400px) {
  ul.menu li {float: none;width:auto;}
  div.content {padding: 10px 8px;}
}
span {display:inline-block;}
span.h2 {font-size:22px;}
span.mt {margin-top:10px;}