@media only screen and (max-width: 600px) {
    .box-black {
        background-color: rgba(0,00,0,0.5);
        margin-left: 0px;
        position: initial;
    }
    .logosempresas {
        background-position: center;
    }
    .pading-cont {
      padding-right: 0px; 
    }
    .navbar {
        height: auto;
    }
    .logo{
        width: 50px;
    }
    .logosempresastop {
        margin-top: 130px;
    }

    .title {
        font-size: 38px;
    }
    .margennuestras h1 {
        font-size: 48px;
    }
    .title3 h2 {
        
        font-size: 23px;
    }
    .title4 {
        text-align: center;
        font-size: xx-large;
    }
}