.float {
    margin: 0;
    padding: 0;
    position: fixed;
    top: 30%;
    z-index: 11;
    list-style-type: none;
}
   .my-float {
        background-color: #bf0b0b;
        text-align: center;
        line-height: 25px;
        display: block;
        font-size: 25px;
        position: relative;
        margin: 15px 0;
        padding: 8px 8px;
    }

    .my-float:hover {
        background-color: #29a643;
        transition: all 0.4s ease 0s;
    }