*{
    margin: 0;
    padding: 0;
}
.header{
    min-height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(./DCU.jpg);
    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: white;
    text-decoration: none;
    font-size: 13px;
    font-family:'Times New Roman', Times, serif;
    font-weight: 800;
}
.nav-links ul li ::after{
    content:'';
    width:0%;
    height:2px;
    background: #f44336;
    display: block;
    margin: auto;
    transition: 0.5s;
}
.nav-links ul li:hover::after{
    width: 100%;
    
}
.text-box{
    color:white;
    width:90%;
    position: absolute;
    top:50%;
    left: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: white;
    border:1px solid #fff;
    padding:12px 34px;
    font-size: 13px;
    background: transparent;
    position: relative;
    cursor: pointer;
}
.hero-btn:hover{
    border: 1px solid #f44336;
    background: #f44336;
    transition: 1s;
}
@media(max-width:700px){
    .text-box h1{
     font-size: 20px;
    }
    .nav-links ul li{
        display: block;
    }
    .nav-links{
        position: absolute;
        background: #f44336;
        height:100vh;
        width:200px;
        top: 0;
        right: 0;
        text-align: left;
        z-index: 2;
    }
}

.course{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top:100px ;
}
h1{
    font-size: 36px;
    font-weight: 600;
}
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: #e7cece;
    border-radius: 10px;
    margin-bottom: 5%;
    padding: 20px 12px;
    box-sizing: border-box;
    transition: 0.5s;
}
h2{
    text-align: center;
    font-weight: 600;
    margin: 10px 0;
}
.course-col:hover{
    box-shadow: 0 0 20px 0px rgba(0,0,0,0.2);
}
.campus{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top: 15px;
}
.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(226,0,0,0.7);;
}
.layer h2{
    width: 100%;
    font-weight:500;
    color: #fff;
    font-size: 26px;
    bottom: 0;
    left: 50%;
    transform: translate(-50%);
    position: absolute;
    
}
.layer:hover h2{
    bottom: 49%;
    opacity: 1;
    
}
.facilities{
    width: 80%;
    
    margin: auto;
    text-align: center;
    padding-top: 15px;
}
.facilities-col{
    flex-basis: 31%;
    border-radius: 10px;
    margin-bottom: 5%;
    text-align: left;
}
.facilities-col img{
    width: 100%;
    border-radius: 10px;

}
.facilities p{
    padding: 0;

}
.facilities-col h2{
  margin-top: 16px;
  margin-bottom: 15px;
  text-align: left;
}
.testimonials{
    width: 80%;
    margin: auto;
    padding-top: 20px;
    text-align: center;
}
.testimonial-col{
    flex-basis: 44%;
    border-radius: 15px;
    margin-bottom: 5%;
    text-align: left;
    background: #f7d8d8;
    padding: 25px;
    cursor: pointer;
    display: flex;
}
.testimonial-col img{
    height: 70px;
    margin-left: 5px;
    margin-right: 14px;
    border-radius: 50%;
} 
.testimonial-col p{
    padding: 0;
}
.testimonial-col h2{
    margin-top: 75px;
    text-align: center;
   
}
.cta{
    margin: 100px auto;
    width: 80%;
    background-image: linear-gradient(rgba(0,0,0,0.7),rgba(0,0,0,0.7)),url(./conference.jpg);
    background-position: center;
    background-size: cover;
    border-radius: 10px;
    text-align: center;
    padding: 50px 0;
}
.cta h1{
    color: #fff;
    margin-bottom: 40px;
    padding: 0;

}
.footer{
    width: 100%;
    text-align: center;
    padding: 10px 0;
}
.footer h3{
    margin-bottom: 25px;
    margin-top: 20px;
    font-weight: 600;
}
.sub-header{
    height: 50vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(./graduation.jpg);
    background-position: center;
    background-size: cover;
    text-align: center;
    color: #f5f3f3;
  
}
.sub-header h1{
    margin-top: 70px;
}
.about-us{
    width: 80%;
    margin: auto;
    padding-top: 80px;
    padding-bottom: 50px;
}
.about-col{
    flex-basis: 48%;
    padding: 30px 2px;

}
.about-col img{
    width: 100%;
}
.about-col h1{
    padding-top: 0;
}
.about-col p{
    padding: 15px 0 25px;
}
.red-btn{
    border: 1px solid #f44336;
    background: transparent;
    color: #f44336;
}
.red-btn:hover{
    color: #f5f3f3;
}
.blog-content{
    width: 80%;
    margin: auto;
    padding: 60px 0;
}
.blog-left{
    flex-basis: 65%;

}
.blog-left img{
    width: 100%;

}
.blog-left h2{
    color:#222;
    font-weight: 700;
    margin: 30px 0;
}
.blog-left p{
    color: #999;
    padding: 0;
}
.blog-right{
    flex-basis: 32%;
}
.blog-right h3{
    background: #f44336;
    color: #080808;
    padding: 7px 0;
    font-size: 19px;
    margin-bottom: 20px;
    text-align: center;
}
.blog-right div{
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #555;
    padding: 8px;
    box-sizing: border-box;
}
.comment-box{
    border: 1px solid #ccc;
    margin: 50px 0;
    padding: 10px 20px;
}
.comment-box h3{
    text-align: left;
}
.comment-form input, .comment-form textarea{
 width: 100%;
 padding: 10px;
 margin: 15px 0;
 box-sizing: border-box;
 outline: none;
 background: #f0f0f0;

}
.comment-form button{
    margin: 10px 0;
}

.location{
    width: 80%;
    margin: auto;
    padding: 80px 0;

}
.location iframe{
    width: 100%;

}
.contact-us{
    width: 80%;
    margin: auto;
}
.contact-col{
 flex-basis: 48%;
 margin-bottom: 30px;
}
.contact-col div {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
}
.contact-col input, .contact-col textarea{
    width: 100%;
    padding: 15px;
    margin-bottom: 17px;
    outline: none;
    border: 1px solid #ccc;
}
@media(max-width:700px){

    .header{
        min-height: 100vh;
    }

    nav{
        flex-direction: column;
        align-items: center;
        padding: 20px;
    }

    nav img{
        width: 120px;
        margin-bottom: 15px;
    }

    .nav-links{
        position: static;
        width: 100%;
        height: auto;
        background: transparent;
        text-align: center;
    }

    .nav-links ul{
        padding: 0;
    }

    .nav-links ul li{
        display: inline-block;
        margin: 5px 8px;
        padding: 5px;
    }

    .nav-links ul li a{
        font-size: 12px;
    }

    .text-box{
        width: 90%;
        top: 55%;
    }

    .text-box h1{
        font-size: 28px;
        line-height: 1.3;
    }

    .text-box p{
        font-size: 13px;
        margin: 15px 0 25px;
    }

    .hero-btn{
        padding: 10px 22px;
        font-size: 12px;
    }

    .row{
        flex-direction: column;
    }

    .course-col,
    .campus-col,
    .facilities-col,
    .testimonial-col,
    .about-col,
    .blog-left,
    .blog-right,
    .contact-col{
        flex-basis: 100%;
        margin-bottom: 25px;
    }

    .testimonial-col{
        flex-direction: column;
        text-align: center;
    }

    .testimonial-col img{
        margin: auto;
        margin-bottom: 15px;
    }

    .testimonial-col h2{
        margin-top: 15px;
    }

    h1{
        font-size: 28px;
    }

    p{
        font-size: 13px;
    }

    .cta h1{
        font-size: 24px;
        line-height: 1.4;
    }

    .sub-header h1{
        font-size: 26px;
        margin-top: 60px;
    }

    .location iframe{
        height: 300px;
    }

    .footer{
        padding: 20px 10px;
    }
}