* {
    margin: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    font-family: 'Roboto', sans-serif;
    font-size: 1.2rem;
    line-height: 1.5;
    color: #333;
    background-color: #eee;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
    width: 100vw;
    height: 100vh;
}

main {
    position: relative;
    margin: 8rem 1rem;
}


/* navbar */
nav {
    position: fixed;
    width: calc(100% - 2rem);
    top: 0;
    z-index: 10;
    margin: 1rem;
    background-color: #fff;
    border: 0.15rem solid #eee;
}

nav ul {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 1rem;
    list-style: none;
    border-radius: 0.4rem;
    box-shadow: 0px 6px 0px 8px #b9b9b9;
}

nav ul li {
    padding: 0.3rem 0.5rem;
    border: 0.15rem dashed #333;
    border-radius: 0.3rem;
}

nav ul li:hover {
    cursor: pointer;
    color: #000;
    background: #eee;
    border: 0.15rem solid #333;
    box-shadow: -2px 3px 0rem 2px #333;
    transform: translateY(-0.2rem);
}

nav ul li a {
    color: #333;
    text-decoration: none;
}


/* footer */
footer {
    position: fixed;
    bottom: 0;
    width: calc(100% - 2rem);
    margin: 1rem;
    margin-bottom: 1.4rem;
    padding: 1rem;
    text-align: center;
    background-color: #fff;
    border: 0.15rem solid #eee;
    border-radius: 0.4rem;
    box-shadow: 0px 6px 0px 8px #b9b9b9;
}