style.css

html, body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    height: 99%;
}

body {
    background:linear-gradient(top, #eef, #efe);
    background:-webkit-linear-gradient(top, #eef, #efe); 
    background:-moz-linear-gradient(top,  #eef, #efe); 
    background:-o-linear-gradient(top, #eef, #efe); 
    background:-ms-linear-gradient(top,  #eef, #efe);
}

h1, h2, h3, h4 {
    padding-top: 10px;
    margin-bottom: 10px;
    font-family: 'Luckiest Guy', sans-serif;
    text-align: center;
}

#wrap {
    width: 600px;
    margin: 0px auto;
    background: #fff;
}

.info, .error {
    border-radius: 5px;
    margin: 2px;
    padding: 6px;
}

.info {
    background: #eff;
    border: 2px solid #cee;
}

.error {
    background: #fee;
    border: 2px solid #ecc;
}

#game {
    width: 500px;
    margin: 0px auto;
}

form, input, button {
    margin: 0px;
    padding: 0px;
}

input {
    width: 450px;
    font-size: 20px;
}