body {
    background-color: #F0F7FF;
}

.header {
    background-image: linear-gradient(rgba(255, 255, 255, 0.33), rgba(255, 255, 255, 0.51)), url("../img/back-image.png");
    background-size: cover;
    background-position: center;
}

.courses:before {
    content: '';
    position: absolute;
    width: 25%;
    height: 25%;
    right: 0;
    top: -5%;
    background: #72beffc4;
    filter: blur(120px);
    opacity: 0.8;
    z-index: 0;
}

/* .courses .course-box .img-box:after{
    content:'';
    position: absolute;
    width: 100%;
    height: 100%;
    right: 0;
    top: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, #000000 100%);
    z-index: 1;
} */
.courses .detail-box2 {
    background-color: white;
    top: calc(100% - 3rem);
    z-index: 2;
}

.courses a:hover .detail-box2 .price {
    color: black;
    transition: 0.5s;
}

.courses a:hover .detail-box2 .title {
    color: #4a6ea8;
    transition: 0.5s;
}

.courses a:hover .detail-box2 {
    background-color: #72beffc4;
    transition: 0.5s;
}

.courses a:hover .border-bottom {
    border-color: white !important;
    transition: 0.5s;
}

.courses a:hover .detail-box2 .offer {
    color: #1f3763;
    transition: 0.5s;
}

.courses .detail-box2 .title {
    color: #25447d;
}

.courses .detail-box2 .price {
    color: #B3B3B3;
}

.courses .detail-box2 .offer {
    color: #2b4a83;
}

nav-tabs .nav-item.show .nav-link,
.nav-tabs .nav-link.active {
    color: white !important;
    background-color: #2b4a83 !important;
    border-radius: 30px 30px 0 0 !important;
}

.nav-tabs .nav-link {
    color: black;
    border: none;
    border-radius: 30px 30px 0 0 !important;
}

.nav-link:focus-visible {
    box-shadow: none;
}

.price-box {
    height: 65px;
}

.course-box .detail-box2 .courses-title {
    height: 60px;
}

@media (max-width:992px) {

    .nav-tabs .nav-link,
    nav-tabs .nav-item.show .nav-link,
    .nav-tabs .nav-link.active {
        border-radius: 20px 20px 0 0 !important;
    }

    .price-box {
        height: 55px;
    }
}