header, nav, section, footer{
    border-radius: 25px;
    border: 2px solid blue;
    padding: 1em;
}

.mt {
margin-top: 2em;

}

img {
    width:100%;
    height:100%;
    display:block;
  }

nav, footer, section {
    background-color:ivory;
}

nav, footer{
    font-family: 'Nunito', sans-serif;
    text-align: center;
    color: blue;

}

img {
    padding-top: 20px;
}

header {
    margin-right: 70px;
 }

nav {
   margin-left: 50%;
   font-size: 30px;
}

body {
    margin-top: 100px;
    background-image: url(images/dot.png);
    background-repeat: repeat;
  }

section {
    font-family: 'Quicksand', sans-serif;
    text-align: justify;
    padding: 5em;
}

footer {
    padding-left: 10%;
    text-align: left;
  }

h1 {
    font-family: 'Ubuntu', sans-serif;
    text-align: center;
    font-size: 40px;
}

h2 {
    font-size: 25px;
}

.explecture {
    color: black;
    background-color:blanchedalmond;
}


    canvas { position:fixed; top:0; left:0; z-index:1; }
#pp { position:relative; z-index:2; }