body{
    margin: 0;
    background-color: aliceblue;
}
a{
    text-decoration: none;
}
a:link, a:visited{
    color: #007bff;
}
a:hover, a:active{
    color: #61d0ff;
}

header{
    border-bottom: 10px solid #fdff9e;
}
header h1{
    margin: 0;
    padding: 15px 0;
    background-color: #a5ff9e;
    text-align: center;
    font-family: serif;
}

main{
    max-width: 800px;
    margin: 20px auto;
    border: 1px solid;
    background-color: white;
}
main h5{
    margin: 0;
    padding: 5px;
}
main h2{
    margin: 0;
    padding: 5px 10px;
    background-color: whitesmoke;
}
main p{
    margin: 15px 5px;
}
main img{
    display: block;
    max-width: 80%;
    margin: 20px auto;
}
main .file{
    padding: 3px 5px;
    font-family: "consolas", monospace;
    font-size: 16px;
}
main .file span{
    padding: 3px 5px;
    background-color: #e0e0e0;
}
main pre{
    margin: 0 5px 16px;
    padding: 5px;
    background-color: whitesmoke;
    white-space: pre-wrap;
}
main code{
    font-family: "consolas", monospace;
    font-size: 16px;
    line-height: 1.2em;
}
main hr{
    margin: 25px 8px 5px;
}

footer{
    height: 130px;
    margin-top: 30px;
    background-color: #d7ffd6;
}
footer p{
    max-width: 800px;
    margin: 0 auto;
    padding: 5px;
    text-align: right;
}