body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

a {
    text-decoration: none;
}

.back-btn {
    position: fixed;
    bottom: 50px;
    right: 50px;
    
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: goldenrod;
    display: flex;
    justify-content: center;
    align-items: center;
}

.back-btn:hover {
    cursor: pointer;
    background-color: gold;
    color: white;
}