/* 3- Sections Styles */
/* 3.0 Header Section */

.header {

    position: fixed;
    width: 100%;
    z-index: 1;
    background-color: rgba(0, 0, 0, 0.4);

}

.header .logo {
    width: 40%;
    float: left;
}

.header .nav {
    width: 60%;
    list-style: none;
    text-align: right;
    float: left;
}

.clear {
    clear: both;
}

.header .logo img {

    width: 20%;
    margin-top: 20px;
}

.header .nav li {

    display: inline-block;
    text-align: right;

}

.header .nav>li>a {

    color: #ffffff;
    font-size: 15px;
    display: block;
    padding: 30px 15px;
}

.header .nav>li>a:after,
.header .nav>li>a.active:after {
    content: "";
    background-color: var(--main-color);
    height: 2px;
    display: block;
    margin-top: 2px;
    transition: width 0.5s;

}


.header .nav>li>a:after {

    width: 0;
}

.header .nav>li>a.active:after {

    width: 100%;

}


.header .nav>li>a:hover:after {

    width: 100%;
}




/* Home Section */

.home {

    height: 100vh;
    background-image: url(../images/background/background1.jpg);
    background-size: cover;
    position: relative;

}


.home-content {

    position: absolute;
    width: 65%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}


.home .title {

    color: #fff;
    font-size: 3.5rem;

}

.home .home-desc {

    margin: 20px 0;
    color: white;
    letter-spacing: 2px;
    line-height: 1.5;
}

.home .btn {

    min-width: 160px;
    padding: 15px 0;
    border-radius: 5px;
    border: 0;
    font-size: 20px;
    cursor: pointer;
}

.home .btn-start {

    background-color: white;
    margin-right: 10px;
}


.home .btn-learn {

    background-color: var(--main-color);
    color: white;
}

.dropdown {
    position: relative;
}

.dropdown:after {

    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border: 5px solid;
    border-color: rgb(255, 255, 255) transparent transparent transparent;
    top: 42%;
    right: 0px;
    transition: border-color 0.2s;

}


.dropdown:hover:after {
    border-color: transparent transparent transparent rgb(255, 255, 255);
}


.dorpdown-menu {

    position: absolute;
    width: 150px;
    background-color: var(--main-color);
    text-align: center;
    left: -50%;
    top: 70%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s;

}

.dorpdown-menu a {

    display: block;
    padding: 10px;
    color: white;
}


.dropdown:hover .dorpdown-menu {

    opacity: 1;
    visibility: visible;
}