style.css

* { margin: 0; padding: 0; }
ul { list-style-type: none; }

p { margin: 0.5em 0 0.8em 0; }

body { font-family: sans-serif; font-size: 14px; }

#wrapper {
    margin: 20px auto 0 auto;
    width: 40%;
    min-width: 400px;

    border: solid 1px black;
    border-radius: 25px;
    padding: 20px;
    position: relative;
}

h1 {
    font-size: 1.5em;
    border-bottom: solid 1px black;
    margin: -20px -20px 20px -20px;
    padding: 10px 20px 8px 20px;
}

button, input[type=submit] {
    border: solid 1px #aaa;
    background: white;
    padding: 5px 15px;
    border-radius: 8px;
    background-image: linear-gradient(#ccc, #bbb);
}

button:hover, input[type=submit]:hover {
    background-image: linear-gradient(#ddd, #ccc);
}

button:active, input[type=submit]:active {
    background-image: linear-gradient(#bbb, #ddd);
}

button.default {
    font-weight: bold;
}

.buttons {
    padding-top: 1em;
    text-align: center;
}

.buttons button, .buttons input[type=submit] {
    margin: 0 10px;
}

.inputs {
}

.inputs input {
    display: block;
    padding: 5px 10px;
    border: solid 1px #ccc;
    border-radius: 10px;
    outline: none;
    margin: 10px auto 0 auto;
    width: 200px;
}

.inputs input:focus {
    border-color: #333;
}

#error {
    border: solid 1px #f00;
    padding: 5px;
    margin: 10px 0;
    background: #fee;
    color: #f22;
}

.logout-link {
    position: absolute;
    top: 20px;
    right: 20px;
}