@media only screen and (max-width: 1140px){ 

    .lower-content h1{
        font-size: 30px;
        margin: 10px 0px 15px;
    }
    
    .lower-content h2{
        font-size: 25px;
        margin: 10px 0px 15px;
    }
    
    .lower-content h3{
        font-size: 20px;
        margin: 10px 0px 15px;
    }

    
}

@media only screen and (min-width: 768px){

    .lower-content h1{
        font-size: 28px;
        margin: 10px 0px 15px;
    }
    
    .lower-content h2{
        font-size: 25px;
        margin: 10px 0px 15px;
    }
    
    .lower-content h3{
        font-size: 20px;
        margin: 10px 0px 15px;
    }
}

@media only screen and (max-width: 599px){

    .lower-content h1{
        font-size: 25px;
        margin: 10px 0px 15px;
        font-weight: 700;
        line-height: 1.25;
    }
    
    .lower-content h2{
        font-size: 22px;
        margin: 10px 0px 15px;
        font-weight: 700;
        line-height: 1.25;
    }
    
    .lower-content h3{
        font-size: 20px;
        margin: 10px 0px 15px;
        font-weight: 700;
        line-height: 1.25;
    }
}