span {
    display: block;
}
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 20px;
    color: #fff;
    background-color: #333;
}
h1 {
    font-size: 2em;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 0.5em;
}
p {
    margin: 0 0 10px;
}
input[type=file] {
    display: block;
    background-color: #333;
    color: #fff;
    border: 1px solid #fff;
    padding: 5px;
}
button {
    display: block;
    background-color: #333;
    color: #fff;
    border: 1px solid #fff;
    padding: 5px;
}
.preset:empty {
    display: none;
}
.p-type {
    display: block;
    margin-bottom: 10px;
}
.p-type * {
    display: block;
}
#area {
    width: 20vw;
}