.gap50 {
    clear: both;
    height: 50px;
}

.gap20 {
    clear: both;
    height: 20px;
}

.gap10 {
    clear: both;
    height: 10px;
}

.gap5 {
    clear: both;
    height: 5px;
}

.gap2 {
    clear: both;
    height: 2px;
}

/*define font genneraly*/
h2 {
    margin:0px;
    font-size: 18px;
    font-weight: bold;
}

h3 {
    font-size: 16px;
    margin: 15px 0px 1px 0px;
    font-weight: bold;
}


h4 {
    margin: 10px 0px 1px 0px;
    font-size: 12px;
}


hr {
    border: 0;
    height: 1px;
    padding: 0px;
    margin-top: 10px;
    background: #888;
}

#UsePageBackground {
    box-shadow: 0px 0px 10px 0px black;
}


/*for small media*/
@media screen and (min-width: 768px) {
    #UsePageBackground {
        box-shadow: 0px 0px 10px 0px black;
    }

    h4 {
        font-size: 13px;
    }

    h3 {
        font-size: 15px;
    }

    h2 {
        font-size: 19px;
    }
}

/*for  Tablets*/
@media screen and (min-width: 992px) {
    #UsePageBackground {
        box-shadow: 0px 0px 10px 0px black;
    }

    h4 {
        font-size: 16px;
    }

    h3 {
        font-size: 18px;
    }

    h2 {
        font-size: 22px;
    }
}

/*for Laptops and Desktop*/
@media screen and (min-width: 1200px) {
    #UsePageBackground {
        box-shadow: 0px 0px 10px 0px black;
    }

    h4 {
        font-size: 16px;
    }

    h3 {
        font-size: 19px;
    }
}