.cabeza {
    background: #00bae7;
    color: white;
    padding: 10px 0px;
    font-size: 16px;
    width: 100%;
}
.cabeza-1{
    padding: 0px 15px;font-weight: 100;
}
.pub {
    width: 34%;
    float: left;
}
.pub-1 {
    width: 100%;
}
@media (min-width:300px) and (max-width:400px){
.pub {
    width: 37%;
    float: left;
}
.pub-1 {
    width: 0%;
}
}
@media screen and (min-device-width: 301px) and (max-device-width: 500px) {
    .cabeza {
        background: #00bae7;
        color: white;
        padding: 10px 0px;
        font-size: 16px;
        width: 100%;
    }
    .pub-1 {
        width: 0%;
    }.pub {
        width: 38%;
        float: left;
    }


    .cabeza-1 {
        padding: 0px 0px;
        font-weight: 100;
    }
}
@media (min-width:500px) and (max-width:600px){
    .pub {
    width: 32%;
    float: left;
    padding: 0px 10px;
}
}
@media (min-width:500px) and (max-width:600px){
.pub {
    width: 32%;
    float: left;
    padding: 0px 10px;
}
}
@media (min-width:600px) and (max-width:700px){
.cabeza-1 {
    padding: 0px 50px;
    font-weight: 100;
}
.pub {
    width: 40%;
    float: left;
}

}
@media (min-width:700px) and (max-width:750px){
.cabeza-1 {
    padding: 0px 40px;
    font-weight: 100;
}
.pub {
    width: 33.1%;
    float: left;
}
}
@media (min-width:750px) and (max-width:800px){
.cabeza-1 {
    padding: 0px 5px;
    font-weight: 100;
}
.pub {
    width: 33.1%;
    float: left;
}
}

@media (min-device-width:600px) and (max-device-width:700px){
    .pub {
    width: 40%;
    padding: 0px 0px;
    float: left;
}
}


@media screen and (min-device-width: 770px) and (max-device-width: 830px) {
    .cabeza-1 {
        padding: 0px 5px;
        font-weight: 100;
    }


    .cabeza {
        background: #00bae7;
        color: white;
        padding: 10px 0px;
        font-size: 16px;
        width: 100%;
    }
}
@media screen and (min-device-width: 830px) and (max-device-width: 968px) {
    .cabeza {
        background: #00bae7;
        color: white;
        padding: 10px 100px;
        font-size: 16px;
        width: 100%;
    }
    .pub {
        float: left;
        width: 35.4%;
    }
}
@media (min-width:800px ){
    .cabeza {
    background: #00bae7;
    color: white;
    padding: 10px 0px;
    font-size: 16px;
    width: 100%;
    height: 60px;
}
}
@media (min-width:1400px ){
    .cabeza {
        background: #00bae7;
        color: white;
        padding: 10px 290px;
        font-size: 16px;
        width: 100%;
    }
}
@media screen and (min-device-width: 500px) and (max-device-width: 1020px) {
  .cabeza {
    background: #00bae7;
    color: white;
    padding: 0px 30px;
    font-size: 16px;
    width: 100%;
}
}