body, html {
    width: 100%;
    padding: 0;
    margin: 0;
}

body {
    overflow-y: scroll;
}

* {
    font-family: monospace;
    font-size: 12px;
}

pre, h4 {
    padding: 5px;
    margin: 5px;
}

form {
    display: flex;
    padding: 0;
    margin: 0;
    padding-right: 5px;
    max-width: 600px;
}

input {
    padding: 3px;
    margin: 5px 5px 5px 7px;
    border: 2px solid #ccc;
    width: 100%;   
    outline: none;
}

input:hover {
    border: 2px solid #aaa;
}

input:focus {
    border: 2px solid #ccc;
    outline: none;
    box-shadow: none;
}