.act-btn {
    background: linear-gradient(to right, #3d74a1, #f3ffff, #b8d5e0);
    display: block;
    width: 50px;
    height: 50px;
    line-height: 40px;
    text-align: center;
    color: white;
    font-size: 30px;
    font-weight: bold;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    text-decoration: none;
    transition: ease all 0.3s;
    position: fixed;
    right: 30px;
    bottom: 150px;
    z-index: 10;
    transform: translate3d(0, 0, 0);
}

.act-btn:hover {
    background: rgb(124, 124, 209)
}