.body {
    padding: 0px;
}

/*
.header {
  position: fixed;
    width: 100%;
    
	left: 0;
    top: 0;
    padding: 10px;
    text-align: center;
    background: #1a79bc;
    color: white;
    font-size: 10px;
}
*/

.header {
  overflow: hidden;
  background-color: #337ab7;
  padding: 20px 20px;
}

.header a {
  float: left;
  color: black;
  text-align: center;
  padding: 12px;
  text-decoration: none;
  font-size: 18px; 
  line-height: 25px;
  border-radius: 4px;
}

.header a.logo {
  font-size: 25px;
  font-weight: bold;
}

.header a:hover {
  background-color: #ddd;
  color: black;
}

.header a.active {
  background-color: dodgerblue;
  color: white;
}

.header-right {
  float: right;
}



.footer {
   position: fixed;
   left: 0;
   bottom: 0;
   width: 100%;
   background-color: #333;
   color: white;
   text-align: center;
   padding: 20px;
    font-size: 10px;
}

.logo {
    border: 0px solid;
    border-color: black;
    opacity: 1;
}

img {
    border: 2px solid;
    border-color: black;
    opacity: 0.5;
}

img:hover{
    opacity: 1;
}

.button {
    background-color: #666aaa;
    border: none;
    color: white;
    padding: 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 10px 2px 10px;
    border-radius: 20%;
    
}

.div {
    margin-right: 25%;
    margin-left: 25%;
    margin-top:10px;
    padding: 5px;
}

/*
body {
    font: 20px sans-serif;
    margin: 0;
}
*/
.wrapper { 
    width: 350px; padding: 20px;
    margin-left: auto;
    margin-right: auto;
}


button,
input,
optgroup,
select,
textarea {
  --margin: 15px;
  font: inherit;
  color: inherit;
}
button {
  overflow: visible;
}
button,
select {
  text-transform: none;
}
button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button;
  cursor: pointer;
}
button[disabled],
html input[disabled] {
  cursor: default;
}
button::-moz-focus-inner,
input::-moz-focus-inner {
  padding: 0;
  border: 0;
}