html {
    scroll-behavior: smooth;
}

body {
    background-color: antiquewhite;
    cursor: default;
}

h1 {
    text-align: center;
    border-bottom: double 10px;
}

a:hover:not(.back-to-top) {
    color: #0056b3;
    text-decoration: underline;
}

.index {
    background-color: rgb(255, 245, 231);
    padding: 10px;
    border: 2px solid black;
    border-radius: 20px;
    overflow: hidden;
    max-width: 90%;
    width: fit-content;
    margin: auto;
}

.main {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 16px;
}

.back-to-top {
    position: fixed;
    right: 16px;
    bottom: 16px;
    padding: 8px 12px;
    background: #333;
    color: white;
    text-decoration: none;
    border-radius: 4px;
}

.back-to-top:hover {
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
    transform: translateY(-1px);
}

.back-to-top:active {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transform: translateY(1px);
}