* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Noto Sans", sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
}

.advanced-topic-index {
    width: 480px;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
}

.advanced-topic-index p {
    color: #fff;
    font-size: 30px;
    margin-bottom: 50px;
}

.advanced-topic-index h1 {
    text-transform: uppercase;
    font-size: 30px;
    margin-bottom: 35px;
    line-height: 1.5em;
}

.advanced-topic-index h1 span {
    display: block;
}

.advanced-topic-index h2 {
    background-color: var(--first-color);
    color: #fff;
    margin: 0 5px 0 2px;
    padding: 10px 20px;
    font-size: 1.2rem;
    padding: 10px 20px;
}

.advanced-topic-index h2#head {
    border-radius: 30px 30px 0 0;
}

.advanced-topic-index h2#foot {
    border-radius: 0 0 30px 30px;
}

.advanced-topic-index .list {
    list-style: none;
    text-align: left;
    margin: 0 5px 0 2px;
    padding: 0;
    font-size: 1rem;
}

.advanced-topic-index .list a {
    display: block;
    padding: 10px 20px;
    text-decoration: none;
    color: var(--font-color);
    background-color: var(--background-color);
}

.advanced-topic-index .list a span {
    -webkit-transition: all 0.2s ease-out;
    transition: all 0.2s ease-out;
    position: relative;
    left: 0;
}

.advanced-topic-index .list a:hover {
    background-color: rgba(235, 243, 247, 0.7);
}

.advanced-topic-index .list a:hover span {
    left: 8px;
    -webkit-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}

.advanced-topic-index .list li {
    margin: 0 0 1px 0;
    padding: 0;
}