*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.slide{
    height: 100vh;
    width: 99vw;
}

.slide:nth-child(1){
    body{
        background:rgba(0, 0, 0, 0.7) url(chau_1.jpg);
        background-repeat: no-repeat;
        background-position: center;
        background-attachment: fixed;
        background-size: cover;
        background-blend-mode: darken;
    }
    
    .header1{
        font-size: 50px;
        text-align: center;
        padding-top: 100px;
        color: white;
        margin-bottom: 10px;
    }
    .header2{
        text-align: center;
        color: white;
        font-size: 25px;
        font-family: 'Protest Revolution', sans-serif;
        padding-bottom: 40px;
    }
    
    .tagline{
        text-align: center;
        color: white;
        font-family: "Roboto", sans-serif;
        margin-top: 100px;
        font-size: 30px;
        font-weight: bold;
    }
    
    .button{
        text-align: center;
        button{
            background-color: white;
            border: none;
            height: 40px;
            width: 150px;
            border-radius: 20px;
            margin-top: 40px;
            font-size: 15px;
            font-weight: bold;
            cursor: pointer;
            opacity: 0.6;
            transition: opacity 0.15s;
        }
        button:hover{
            opacity: 0.7;
        }
    }
    
    .icons{
        display: flex;
        justify-content: center;
        margin-top: 20px;
        font-size: 30px;
        color: white;
        column-gap: 20px;
        .insta, .fb, .x{
            a, a:hover, a:visited, a:active {
                color: inherit;
                text-decoration: none;
               }
        }
    }

}

.slide:nth-child(2){
    background-color: white;
    .header{
        min-height: 100vh;
        width: 100%;
        background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(banner.png);
        background-position: center;
        background-size: cover;
        position: relative;
    }
    nav{
        display: flex;
        padding: 2% 6%;
        justify-content: space-between;
        align-items: center;
    }
    nav img{
        width: 150px;
    }
    .nav-links{
        flex: 1;
        text-align: right;
    }
    .nav-links ul li{
        list-style: none;
        display: inline-block;
        padding: 8px 12px;
    
        position: relative;
    }
    .nav-links ul li a{
        color: #fff;
        text-decoration: none;
        font-size: 13px;
    }
    .nav-links ul li::after{
        content: '';
        width: 0%;
        height: 2px;
        background: #f44366;
        display: block;
        margin:auto;
        transition: 0.5s;
    }
    .nav-links ul li:hover::after{
        width: 100%;
    }
    .text-box{
        width: 90%;
        color: #fff;
        position: absolute;
        top: 50%;
        transform: translate(-50, -50%);
        text-align: center;
    }
    .text-box h1{
        font-size: 62px;   
    }
    .text-box p{
        margin: 10px 0 40px;
        font-size: 14px;
        color: white;
    }
    .hero-btn{
        display: inline-block;
        text-decoration: none;
        color: #fff;
        border: 1px solid #fff;
        padding: 12px 34px;
        font-size: 13px;
        background: transparent;
        position: relative;
        cursor: pointer;
    }
    .hero-btn:hover{
        border: 1px solid #f44366;
        background: #f44366;
        transition: 1s;
    }
    nav .fa{
        display: none;
    }
    @media(max-width:700px){
        .text-box h1{
            font-size: 20px;
        }
        .nav-links ul li{
            display: block;
        }
        .nav-links{
            position: absolute;
            background: #f44366;
            height: 100vh;
            width: 200;
            top: 0;
            right:-200px;
            text-align: left;
            z-index: 2;
            transition: 1s;
    
        }
        nav .fa{
            display: block;
            color: #fff;
            margin: 10px;
            font-size:22px;
            cursor: pointer;
    
        }
        .nav-links ul{
            padding: 30px;
    
        }
    }
    /*------------course---------------*/
    .course{
        width: 80%;
        margin: auto;
        text-align: center;
        padding-top: 100px;
    
    }
    h1{
        font-size: 36px;
        font-weight: 600;
    }s
    p{
        color: #777;
        font-size: 14px;
        font-weight: 300;
        line-height: 22px;
        padding: 10px;
    }
    .row{
        margin-top: 5%;
        display: flex;
        justify-content: space-between;
    }
    .course-col{
        flex-basis: 31%;
        background: #fff3f3;
        border-radius:10px;
        margin-bottom: 5%;
        padding: 20px 12px;
        box-sizing: border-box;
        transition: 0.5s;
    }
    h3{
        text-align: centre;
        font-weight: 600;
        margin: 10px 0;
    }
    .course-col:hover{
        box-shadow:0 0 20px 0px rgba(0,0,0,0.2);
    
    }
    @media(max-width: 700px){
        .row{
            flex-direction: column;
        }
    }
    /*----------campus-------------*/
    .campus{
        width: 80%;
        margin: auto;
        text-align: center;
        padding-top: 50px;
    }
    .campus-col{
        flex-basis: 32%;
        border-radius: 10px;
        margin-bottom: 30px;
        position: relative;
        overflow: hidden;
    }
    .campus-col img{
        width: 100%;
        display: block;
    }
    .layer{
        background:transparent;
        height: 100%;
        width: 100%;
        position: absolute;
        top: 0;
        left: 0;
        transition: 0.5s;
    }
    .layer:hover{
        background: rgba(250,250,250,0.2);
    
    }
    .layer h3{
        width: 100%;
        font-weight: 500;
        color: #fff;
        font-size: 26px;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        position: absolute;
    }
    .layer:hover h3{
        bottom:49%;
        opacity: 1;
    }
    /*--------------facilities---------------*/
    .facilities{
    
        width: 80%;
        margin: auto;
        text-align: center;
        padding-top: 100px;
    }
    .facilities-col{
        flex-basis: 31%;
        border-radius: 10px;
        margin-bottom: 5%;
        text-align: left;
    }
    .facilities-col img{
        width: 100%;
        border-radius: 10px;
    }
    .facilities-col p{
        padding: 0;
    }
    facilities-col h3{
        margin-top: 16px;
        margin-bottom: 15px;
        text-align: left;
    
    }
    /*-----------testimonial----------*/
    .testimonials{
        width: 80%;
        margin:auto ;
        padding-top: 100px;
        text-align: center;
    }
    .testimonial-col{
        flex-basis: 44%;
        border-radius:10px;
        margin-bottom: 5%;
        text-align: left;
        background: #fff3f3;
        padding: 25px;
        cursor: pointer;
        display: flex;
    }
    .testimonial-col img{
        height: 40px;
        margin-left: 5px;
        margin-right: 30px;
        border-radius: 50%;
    }
    .testimonial-col p{
        padding: 0;
    }
    .testimonial-col h3{
        margin-top: 15px;
        text-align: left;
    }
    .testimonial-col.fa{
        color:#f44336;
    }
    @media(max-width: 700px){
        .testimonial-col img{
            margin-left: 0px;
            margin-right: 30px;
        }
    }
    /*----footer....*/
    .footer{
        width: 100%;
        text-align: center;
        padding: 30px 0;
        font-weight: 600;
    
    }
}

.slide:nth-child(3){
    .about{
    
        background-image: url('contact_us_2.jpg');
        background-size: cover;
        background-attachment: fixed;
        margin: 0;
        padding: 0;
        height: 150vh;
    }
    .about img{
        height: 590px;
        width: 550px;
    }
    .about-text{
        padding-top: 70px;
        width:550px;  
    }
    .main{
      width: 1130px;
      max-width: 95%;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-around;  
    }
    .about-text h1{
        color:black;
        font-size: 80px;
        text-transform: capitalize;
        margin-bottom: 20px;
    }
    .about-text h5{
        color:black;
        font-size: 32px;
        text-transform: capitalize;
        margin-bottom: 25px;
        letter-spacing: 2px;
    }
    span{
        color: rgba(6, 4, 48, 0.762);
    }
    .about-text p{
        color:black;
        font-size: 25x;
        line-height:28px;
        margin-bottom: 45px;
        letter-spacing: 1px;
    }
    .opacity{
        opacity:1;
        transition: background-image 0.3s ease, opacity 0.3s ease;
    }
    .logo{
        padding-right: 10px;
        margin-right: 80px;
        margin-left: -10px;
    }
    button{
        background: rgb(94, 188, 225);
        color: black;
        text-decoration: solid;
        border: 2px solid transparent;
        font-weight: bold;
        padding: 13px 30px;
        border-radius: 30px;
        transition: .4s;
    }
    button:hover{
        background: transparent;
        border: 2px solid  rgb(94, 188, 225);
        cursor:pointer;
    }
}