modelo-redes{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#btn-mas{
    display: none;
}
.container-redes{
    

 
        position: fixed;
        z-index: 999;
        border-radius: 50%;
        bottom: 170px;
        right: 15px;
        padding: 10px;
        transition: ease 0.3s;

}
.redes a, .btn-mas label{
    display: block;
    text-decoration: none;
    background:#1755a2;
    color: #fff;
    width: 55px;
    height: 55px;
    line-height: 55px;
    text-align: center;
    border-radius: 50%;
    box-shadow: 0px 1px 10px rgba(0,0,0,0.4);
    transition: all 500ms ease;
}
.redes a:hover{
    background: #fff;
    color:#1755a2;
}
.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: #1755a2;
    font-size: 23px;
}
#btn-mas:checked ~ .btn-mas label{
    transform: rotate(135deg);
    font-size: 25px;
}