#btn-mas{
    display: none;
}
.container-redes {
    position: fixed;
    bottom: 20px;
    right: 10px;
    z-index: 999999;
}
.btn-mas label {
    display: block;
    text-decoration: none;
    background: #25d366;
    color: #fff;
    width: 60px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    border-radius: 50%;
    box-shadow: 0px 1px 10px rgba(0,0,0,0.4);
    transition: all 500ms ease;
    right: 0px !important;
}
.redes a {
    display: block;
    text-decoration: none;
    background: #25d366;
    color: #fff;
    width: 85px;
    height: 35px;
    line-height: 35px;
    text-align: center;
    border-radius: 5px 5px 5px 5px;
    box-shadow: 0px 1px 10px rgba(0,0,0,0.4);
    transition: all 500ms ease;
    font-size: 12px;
    font-family:Arial, Helvetica, sans-serif;
}
.redes a:hover{
    background: #25d366;
    color: #FFFFFF;
}
.redes a{
    margin-bottom: -15px;
    opacity: 0;
    visibility: hidden;
}
#btn-mas:checked~ .redes a{
    margin-bottom: 10px;
    opacity: 1;
    visibility: visible;
}
.btn-mas label{
    cursor: pointer;
    background: #25d366;
    font-size: 33px;
    right: 0px;
}
#btn-mas:checked ~ .btn-mas label{
    font-size: 31px;
}