styles.css

body {
    background-color: #0f0f0f;
}

body h1 {
    font-family: "YurukaStd";
    color: aliceblue;
}

body h2 {
    font-family: "YurukaStd";
    color: aliceblue;
    font-size: 70%;
}

body div {
    color:aquamarine;
    font-family: 'Courier New', Courier, monospace;
    margin-left: 20px;
}

@font-face {
    font-family: "YurukaStd";
    src: url('fonts/FOT-YurukaStd-UB.ttf');
    font-weight: normal;
    font-style: normal;
}

.tree-item {
    background-color: #5f5f5f;
    width: auto;
    font-size:medium;
    padding: 6px;
    font-family: "YurukaStd";
    font-size: large;
}

.tree-item.base {
    background-color: purple;
    width: 20%;
    font-size: medium;
    padding-left: 10px;
}

.tree-item .nested-tree {
    background-color: rgb(129, 0, 0);
    border-radius: 0px;
    color:red;
}

.outer {
    width: 70%;
    background-color: #0c1333;
    border-radius: 5px;
    margin-bottom: 20px;
}

input {
    width: 5%;
    font-family: "YurukaStd";
    margin-left: 20px;
    margin-bottom: 20px;
    display: inline-block;
    font-size: 20px;
}

label {
    margin-left: 20px;
    font-size: 30px;
}

.modifier-button {
    width: auto;
    font-family: "YurukaStd";
    margin-bottom: 20px;
    display: inline-block;
    font-size: 20px;
    background-color: dimgrey;
    color: white;
    border-radius: 5px;
}

.modifier-button:active {
    background-color: lightgray;
}