style.css

body {
    color: #000;
    background-color:#ffffff;
    font-family: sans;
    font-size: 15px;
}
h1, .logo {
    text-align: center
}
h1,h2,h3,h4,h5,h6 {
    font-weight:400;
    margin:10px 0
}
.attribution {
    font-size: 80%;
    line-height: 1;
}
blockquote {
    margin-right: inherit
}

a {
    font-weight: inherit;
    color: black;
    text-decoration: underline;
}
a:hover { color: #666 }

.sidenav {
    height: 100%;
    width: 250px;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #eee;
    overflow-x: hidden;
    font-size: medium;
}
.sidenav a {
    text-decoration: none
}
.sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}

.openbtn {
    position: fixed;
    left: 25px;
    cursor: pointer;
}

#main {
    padding-left: 250px;
    margin-right: 1%;
    line-height: 1.5;
    margin-top: 40px;
    width: 100%;
    box-sizing: border-box;
}

#head {
    position: fixed;
    padding-left: 250px;
    background: #fff;
    height: 40px;
    width: 100%;
    top: 0;
    box-sizing: border-box;
}
div:target {
  padding-top: 40px; 
  margin-top: -40px;
}

@media screen and (max-width: 799px) {
    .sidenav { left: -250px;}
    #main { padding-left: 1%;}
    #head { padding-left: 1%;}
}

#search {
    width: 150px;
    padding-left: 1em;
    padding-right: 1em;
}

button, #search {
    height: 2em;
    border-radius: 1em;
}