#useful-top {
    background-image: url("../img/useful@2x.jpg");
    background-position: top center;
    width: 100%;
    background-size: cover;
    height: 330px;
    max-width: 2000px;
    margin: 0 auto;
}

.useful-link {
    font-family: "frank-heavy";
    font-size: 22px;
    line-height: 32px;
    letter-spacing: 0.2px;
}

.useful-link a {
    color: #0093FF;   
}

.pt-b-80 {
    padding-bottom: 80px;
}

.useful-link a:hover {
    text-decoration: underline;  
}

@media (max-width: 820px) {
    #useful-top {
        background-image: url("../img/useful-m@2x.jpg");
        height: 300px;
    }
}

@media (max-width: 768px) {


.useful-link {
    font-size: 18px;
    line-height: 24px;
}

}

@media (max-width: 414px) {
    #useful-top {
        background-image: url("../img/useful-m@2x.jpg");
        height: 152px;
    }

}