#back-to-top {
    background-color: #00CD00;
    bottom: 0;
    box-shadow: 0 0 6px #00CD00;
    color: #444444;
    padding: 10px 10px;
    position: fixed;
    right: 50px;
    cursor: pointer;
}
h1 {
    background: #d2eef4;
    padding: 5px;
    border-radius: 6px;
}
h2 {
    text-align: center;
    background: #ddddff;
    padding: 5px;
    border-radius: 5px;
}
h3 {
    background: #4efbe3;
    padding: 5px;
    width: 70%;
    border-radius: 5px;
}
h4 {
    background: #009ACD;
    width: 50%;
    padding: 5px;
    border-radius: 5px;
}
h5 {
    background: #FF7F50;
    padding: 5px;
    border-radius: 5px;
    font-size: 12px;
    width: 40%;
}