@font-face {
    font-family: "Cairo-Bold";
    src: url("../fonts/Cairo-Bold.ttf") format("truetype");
}

@font-face {
    font-family: "Cairo-SemiBold";
    src: url("../fonts/Cairo-SemiBold.ttf") format("truetype");
}

@font-face {
    font-family: "Cairo-Regular";
    src: url("../fonts/Cairo-Regular.ttf") format("truetype");
}

html {
    height: 100%;
    margin: 0px;
    direction: rtl;
}

body {
    width: 100%;
    height: 100%;
    margin: 0;
}

.mainAll {
    width: 100%;
    height: 100%;
    background-image: url("../images/bg.png");
    background-size: cover;
}


.mainBar {
    margin-top: 50px;
    display: inline-flex;
    align-items: flex-end;
    margin-left: 20px;
}

.mainCourseName {
    display: inline-flex;
    margin-bottom: 4px;
}

.mainCourseNameText {
    font-family: Cairo-Bold, Verdana, sans-serif;
    font-size: 35px;
    color: #404040;
    border-bottom: 4px solid #00b0c1;
    padding: 0 15px 10px;
    line-height: 1.4;
}

.circleImg {
    margin-bottom: -9px;
}

.unitsItems {
    display: flex;
    flex-wrap: wrap;
    width: 1120px;
    margin: 30px calc(50% - 560px);
}

.unitBtn {
    position: relative;

    width: 250px;
    margin: 15px;
}

.unitBtn img {
    width: 250px;
}

.unitBtn a {
    position: absolute;
    display: table;
    width: 100%;
    height: 100%;
    top: 0;
    right: 0;
    text-decoration: none;

}

.unitBtn:hover img {
    content: url("../images/btn_over.png");
    background-image: url("../images/btn_over.png");
}

.unitBtn:hover a div {
    color: #00b0c1;
}


.unitBtn a div {
    display: table-cell;
    font-family: Cairo-SemiBold, Verdana, sans-serif;
    font-size: 25px;
    color: #404040;


    text-align: center;
    vertical-align: middle;
}



@media (max-width: 1200px) and (min-width: 992px) {
    .mainCourseNameText {
        font-size: 33px;
    }

    .unitsItems {
        width: 920px;
        margin: 30px calc(50% - 460px);
    }

    .unitBtn {
        width: 200px;
        margin: 15px;
    }

    .unitBtn img {
        width: 200px;
    }

    .unitBtn a div {
        font-size: 21.5px;
    }
}

@media (max-width: 992px) and (min-width: 768px) {

    .mainBarImg img {
        width: 140px;
    }

    .mainCourseNameText {
        font-size: 30px;
    }

    .unitsItems {
        width: 690px;
        margin: 30px calc(50% - 345px);
    }

    .unitBtn {
        width: 200px;
        margin: 15px;
    }

    .unitBtn img {
        width: 200px;
    }

    .unitBtn a div {
        font-size: 21px;
    }
}

@media (max-width: 768px) {

    .mainBarImg img {
        width: 130px;
    }

    .mainCourseNameText {
        font-size: 27px;
    }

    .unitsItems {
        width: 400px;
        margin: 30px calc(50% - 200px);
    }

    .unitBtn {
        width: 180px;
        margin: 10px;
    }

    .unitBtn img {
        width: 180px;
    }

    .unitBtn a div {
        font-size: 19px;
    }
}

@media (max-width: 500px) {

    .mainBarImg img {
        width: 120px;
    }

    .mainCourseNameText {
        font-size: 25px;
    }

    .unitsItems {
        width: 340px;
        margin: 30px calc(50% - 170px);
    }

    .unitBtn {
        width: 150px;
        margin: 10px;
    }

    .unitBtn img {
        width: 150px;
    }

    .unitBtn a div {
        font-size: 16px;
    }
}