.listaiconos{
    display: inline-flex; list-style-type: none; padding: 0; margin: 18px 0 0 0;
}
#header4 a
{
    width: 33px;
    height: 34px;
    cursor: pointer;
    float: right;
    margin-left: 5px;
}
#header4 ul
{
    list-style: none;
    margin-right: 10px;
}
#header4 li
{
    display: inline;
    /*margin: 0px 0 13px 17px;*/
}

#header5 a
{
    width: 33px;
    height: 33px;
    cursor: pointer;
    float: right;
    margin-left: 10px;
}

#fb
{
    /*background: url("/images1/iconos_redes_2019.png") no-repeat -33px 0px;*/
    background: url("/images1/facebook.svg") no-repeat 0px;
    background-size:8px;
}
:hover#fb
{
    /*background: url("/images1/iconos_redes_2019.png") no-repeat -33px -34px;*/
    background: url("/images1/facebook(A).svg") no-repeat 0px;
    background-size:8px;
}
#tw
{
    /*background: url("/images1/iconos_redes_2019.png") no-repeat 0px 0px;*/
    background: url("/images1/twitter.svg") no-repeat 0px;
    background-size:18px;
}
:hover#tw
{
    /*background: url("/images1/iconos_redes_2019.png") no-repeat 0px -34px;*/
    background: url("/images1/twitter(A).svg") no-repeat 0px;
    background-size:18px;
}
#fc
{
    background: url("/images1/Iconos-(31x31).png") no-repeat -66px 0px;
    background-size:8px;
}
:hover#fc
{
    background: url("/images1/Iconos-(31x31).png") no-repeat -66px -35px;
    background-size:8px;
}
#ca
{
    background: url("/images1/Iconos-(31x31).png") no-repeat -33px 0px;
}
:hover#ca
{
    background: url("/images1/Iconos-(31x31).png") no-repeat -33px -35px;
    background-size:8px;
}
#yt
{
    background: url("/images1/YOUtube.svg") no-repeat 0px;
    background-size:22px;
}
:hover#yt
{
    background: url("/images1/youtube_y.svg") no-repeat 0;
    background-size:22px;
}
#in
{
    background: url("/images1/IN.svg") no-repeat 0px;
    background-size:18px;
}
:hover#in
{
    background: url("/images1/in_y.svg") no-repeat 0px;
    background-size:18px;
}
#instagram
{
    background: url("/images1/INStagram.svg") no-repeat 0px;
    background-size:18px;
}
:hover#instagram
{
    background: url("/images1/instagram_y.svg") no-repeat 0px;
    background-size:18px;
}
#alumni
{
    width:50px;
    background: url("/images1/ESPOLalumni.svg") no-repeat 0px;
    background-size:50px;
}
#alumni:hover
{
    background: url("/images1/ESPOLalumni(amarillo).svg") no-repeat 0px;    
}



#cec
{
    background: url("/images1/CEC.svg") no-repeat 0px;
}
:hover#cec
{
    background: url("/images1/CEC(A).svg") no-repeat 0px;
}

#postgrados
{
    background: url("/images1/Postgrado.svg") no-repeat 0px;
}
:hover#postgrados
{
    background: url("/images1/Postgrado(A).svg") no-repeat 0px;
}
#header4{
    padding: 8px;
    display: inline-flex;   
}
#header5{
    padding: 8px;
    display: inline-flex;   
    border-left:2px solid black;
}

@media (max-width: 767px) {
    .listaiconos{
        margin: 0px;
        padding:0;
    }
    #header4, #header5{
        padding: 0 2px;
    }
}