@media (min-width: 1px) { 
    .cajas-tv{
        width: 22%;
        min-width: 61.25px;
        max-width:180px;
        background-color:#343a40; 
        min-height: 43.83px;
        max-height: 127.8px;
        margin:2px;
    }
 }

 @media (min-width: 400px) { 
    .cajas-tv{
        width: 10%;
        min-width: 61.25px;
        max-width:180px;
        background-color:#343a40; 
        min-height: 43.83px;
        max-height: 127.8px;
        margin:2px;
    }
 }

/* Small devices (landscape phones, 576px and up)*/
@media (min-width: 576px) { 
    .cajas-tv{
        width: 10%;
        min-width: 61.25px;
        max-width:180px;
        background-color:#343a40; 
        min-height: 43.83px;
        max-height: 127.8px;
        margin:2px;
    }
 }

/* Medium devices (tablets, 768px and up)*/
@media (min-width: 768px) { 
    .cajas-tv{
        width: 10%;
        min-width: 61.25px;
        max-width:180px;
        background-color:#343a40; 
        min-height: 43.83px;
        max-height: 127.8px;
        margin:2px;
    } 
}

/* Large devices (desktops, 992px and up)*/
@media (min-width: 992px) { 
    .cajas-tv{
        width: 10%;
        min-width: 61.25px;
        max-width:180px;
        background-color:#343a40; 
        min-height: 43.83px;
        max-height: 127.8px;
        margin:2px;
    }
 }

/* Extra large devices (large desktops, 1200px and up)*/
@media (min-width: 1200px) { 
    .cajas-tv{
        width: 10%;
        min-width: 61.25px;
        max-width:180px;
        background-color:#343a40; 
        min-height: 43.83px;
        max-height: 127.8px;
        margin:2px;
    }
}