.mini-button {
    font-size: 20px;
    display: inline-block;
    position: fixed;
    right: 5px;
    width: 0;
    height: 0;
    overflow: hidden;
    outline: none;
    border: none;
    padding: 0;
    box-shadow: 0 3px 10px rgba(0, 0, 0, .5);
    cursor: hand;
    border-radius: 50%;
    font-weight: normal;
    z-index: 100;

    -webkit-transition: all 3s cubic-bezier(0.25, 0.25, 0, 1) !important;
    -ms-transition: all 3s cubic-bezier(0.25, 0.25, 0, 1) !important;
    -moz-transition: all 3s cubic-bezier(0.25, 0.25, 0, 1) !important;
    -o-transition: all 3s cubic-bezier(0.25, 0.25, 0, 1) !important;
    transition: all .3s cubic-bezier(0.25, 0.25, 0, 1) !important;
}

.mini-button.show {
    width: 40px;
    height: 40px;
}

.mini-button:hover{
    box-shadow: 0 3px 10px rgba(0, 0, 0, .5), 0 3px 15px rgba(0, 0, 0, .5);
    text-shadow: none;
}

.mini-button:focus{
    outline: none !important;
}