*{
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
}
.header{
    min-height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(76, 78, 80, 0), rgba(76, 78, 80, 0.231)), url(images/banner2.png);
    background-position: center;
    background-size: cover;
    position: relative;
}
nav{
    display: flex;
    padding: 2% 4%;
    justify-content:space-between;
    align-items: center;
}
nav img{
    width: 150px;
}
.nav-links{
    flex: 1;
    text-align: right;
}
/* for the main menus */
.nav-links ul li{
    list-style: none;
    display: inline-block;
    padding: 8px 15px;
    position: relative;
}
.nav-links ul li a{
    color: rgb(0, 0, 0);
    text-decoration: none;
    font-size: 13px;
}
/* for the main menus hover effect*/
.nav-links ul li::after{
    content: '';
    width: 0%;
    height: 2px;
    background-color: rgb(37, 47, 61);
    display: block;
    margin: auto;
    transition: 0.5s;
}
/* for the main menus hover effect*/
.nav-links ul li:hover::after{
    width: 100%;
}
/* for the text box in the banner*/
.text-box{
    width: 90%;
    color: rgb(37, 47, 61);
    position: absolute;
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%);
    text-align: center;
}
.text-box h1{
    font-size: 62px;
}
.text-box-para{
    margin: 40px 0 50px;
    font-size: 16px;
    color: rgb(37, 47, 61);
}
.top-banner-btn{
    display: inline-block;
    text-decoration: none;
    color: rgb(37, 47, 61);
    border: 1px solid rgb(37, 47, 61);
    padding: 12px 34px;
    font-size: 15px;
    background:transparent;
    position: relative;
}
/* for the text box button in the banner*/
.top-banner-btn:hover{
    border: 1px solid rgb(37, 47, 61);
    background: rgb(37, 47, 61);
    transition: 0.5s;
    color: white;
}
nav .fa{
    display: none;
}

/* For Education pages */
.Education{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top: 50px;
}
h1{
    font-size: 40px;
    font-weight: 700;
}
p{
    color: rgb(84, 84, 84);
    font-size: 14px;
    font-weight: 300;
    line-height: 22px;
    padding: 10px;
}
.row{
    margin-top: 5%;
    display: flex;
    justify-content: space-between;

}
.Education-Col{
    flex-basis: 31%;
    background: #fff3f3;
    border-radius: 10px;
    margin-bottom: 5%;
    padding: 20px 12px;
    box-sizing: border-box;
    transition: 0.5s;
}
.Education-DegreeTitle1{
    color: rgb(66, 66, 66);
    font-size: 18px;
    font-weight: 400;
    padding-top: 25px;
}
.Course-Info{
    color: rgb(66, 66, 66);
    font-size: 16px;
    font-weight: 350;
    line-height: 35px;
    padding: 50px;
}
.Education-Certi{
    color: rgb(66, 66, 66);
    font-size: 18px;
    font-weight: 400;
    padding-top: 35px;
}
h3{
    text-align: center;
    font-weight: 600;
    margin: 10px 0px;
}
.Education-Col:hover{
    box-shadow: 0 0 20px 0px rgba(0,0,0,0.2);
}

/* For Experience page */
.Experience{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top: 50px;
}
.Experience-col{
    flex-basis: 45%;
    border-radius: 10px;
    margin-bottom: 5%;
    position: relatve;
    overflow: hidden;
    text-align: left;
}
.Experience-col h3{
    text-align: left;
    margin-top: 16px;
    margin-bottom: 15px;
}
.Experience-col ul li{
    color: rgb(66, 66, 66);
}
.Experience-col p{
    padding: 5px;
}
.swiper{
    width: 600px;
    border: 0.5px solid rgb(169, 169, 169);
    height: 350px;
}
.swiper-slide img{
    width: 100%;
    height: 100%;
}
.swiper .swiper-button-prev, .swiper .swiper-button-next{
    display: none;
}
.swiper .swiper-pagination-bullet-active{
    background: rgb(255, 255, 255);
}
/* call to action */

.cta{
    margin: 100px auto;
    width: 80%;
    background-image: linear-gradient(rgba(0,0,0,0.7),rgba(0,0,0,0.7)), url(images/banner_bottom4.jpg);
    background-position: center;
    background-size: cover;
    border-radius: 10px;
    text-align: center;
    padding: 100px 0;
}
.cta h1{
    color: white;
    margin-bottom: 40px;
}
.bottom-banner-btn{
    display: inline-block;
    text-decoration: none;
    color: rgb(255, 255, 255);
    border: 1px solid rgb(255, 255, 255);
    padding: 12px 34px;
    font-size: 15px;
    background:transparent;
    position: relative;
}
.bottom-banner-btn:hover{
    border: 1px solid rgb(37, 47, 61);
    background: #fff;
    transition: 0.5s;
    color:rgb(37, 47, 61);
}
.footer{
    width: 100%;
    text-align: center;
    padding: 30px 0;
}
.footer h4{
    margin-bottom: 25px;
    margin-top: 20px;
    font-weight: 600;
}
.footer .fa{
    color:rgb(37, 47, 61);
    margin: 0 13px;
    cursor: pointer;
    padding: 18px 0;
}


/* About Page */
.Subheader{
    height: 50vh;
    width: 100%;
    background-image: linear-gradient(rgba(4, 9, 40, 0.7),rgba(4, 9, 40, 0.7)), url(images/banner2.png);
    background-position: center;
    background-size: cover;
    text-align: center;
    color:#fff;
}
.Subheader ul li a{
    color: #fff;
    text-decoration: none;
    font-size: 13px;
}
.About-Me{
    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-left: 10px;
    padding-top: 0;
}
.about-col p{
    padding: 15px 0, 35px;
}

/* Experience page */
.experience-content{
    width: 80%;
    margin: auto;
    padding: 60px 0;
}
.ex-left{
    flex-basis: 40%;
}
.ex-left img{
    width: 100%;
}
.ex-left h2{
    color: rgb(37, 47, 61);
    font-weight: 500;
    margin: 30px 0;
}
.ex-left p{
    color: rgb(37, 47, 61);
    padding: 0;
}
.ex-right{
    flex-basis: 55%;
}
.work-contents{
    margin-bottom: 15px;
}
.ex-right p{
    padding: 0;
}

.ex-right h3{
    background: rgb(37, 47, 61);
    color: #fff;
    padding: 7px 0;
    font-size: 20px;
    margin-bottom: 20px;
}
.ex-right .projectbox{
    background: rgb(236, 156, 65);
    color: #fff;
    padding: 7px 0;
    font-size: 20px;
    margin-bottom: 20px;
}
.contactBox{
    width: 95%;
    border: 1px solid #ccc;
    margin: 50px 0;
    padding: 10px 20px;
}
.contactBox h3{
    text-align: left;
}
.contact-form input, .contact-form textarea{
    width: 100%;
    padding: 10px;
    margin: 15px 0;
    box-sizing: border-box;
    border: none;
    outline: none;
    background: #f0f0f0;
}
.contact-form button{
    margin: 10px 0;
}
.contactMe{
    width: 80%;
    margin: auto;
}
.contact-col{
    flex-basis: 48%;
    margin-bottom: 30%;
}

.contact-col div{
    display: flex;
    align-items: center;
    margin-bottom: 40px;
}
.contact-col div .fa{
    font-size: 28px;
    color: rgb(236, 156, 65);
    margin: 10px;
    margin-right: 30px;
}
.contact-col div p{
    padding: 0;
}
.contact-col div h5{
    font-size: 20px;
    margin-bottom: 5px;
    color: #555;
    font-weight: 400;
}
.contact-col input, .contact-col textarea{
    width: 100%;
    padding: 15px;
    margin-bottom: 17px;
    outline: none;
    border: 1px solid #ccc;
}

/* For smaller screen devices */
@media(max-width: 700px){
    .header{
        min-height: 100vh;
        width: 100%;
        background-image: linear-gradient(rgba(76, 78, 80, 0), rgba(76, 78, 80, 0.231)), url(images/sunyoung_banner_mobile.JPG);
        background-position: center;
        background-size: cover;
        position: relative;
    }
    .nav-links ul li{
        display: block;
    }
    .nav-links{
        position: fixed;
        background: rgb(233, 233, 233);
        height: 100vh;
        width: 150px;
        top: 0;
        right: -200px;
        text-align: left;
        z-index: 2;
        transition: 1s;
    }
    /* For Menu icons */
    nav .fa{
        display: block;
        color:rgb(0, 0, 0);
        margin: 10px;
        font-size: 22px;
        cursor: pointer;
    }
    .nav-links ul{
        padding: 10px;
    }

    .text-box{
        width: 90%;
        color: #fff;
        position: absolute;
        top: 75%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align:center;
    }
    .text-box h1{
        margin-top: 70px;
        font-size: 20px;
    }
    .banner-btn{
        margin: 40px 0 20px;
        display: inline-block;
        text-decoration: none;
        color: #fff;
        border: 1px solid #fff;
        padding: 6px 12px;
        font-size: 12px;
        background:transparent;
        position: relative;
    }
    .text-box-para{
        display: none;
    }
    /* For Education pages */
    .row{
        flex-direction: column;
    }
    .Education-DegreeTitle1{
        font-size: 14px;
        font-weight: 400;
        padding-top: 15px;
    }
    .Course-Info{
        font-size: 14px;
        font-weight: 300;
        line-height: 22px;
        padding: 50px;
    }
    .Education-Certi{
        font-size: 14px;
        font-weight: 400;
        padding-top: 15px;
    }
    .swiper{
        width: 100%;
        height: fit-content;
    }
    .Experience-text{
        display: none;
    }
    .cta h1{
        font-size: 24px;
    }
    .Subheader ul li a{
        color: rgb(37, 47, 61);

    }
    .about-col h1{
        font-size: 24px;
    }
    .Subheader h1{
        font-size: 24px;
        padding-top: 20px;
    }
    .contact-col div .fa{
        font-size: 14px;
        margin-right: 20px;
    }
    .contact-col div h5{
        font-size: 14px;
        margin-bottom: 1px;
    }
    .contact-col input, .contact-col textarea{
        width: 100%;
        padding: 15px;
        margin-bottom: 17px;
        outline: none;
        border: 1px solid #ccc;
        box-sizing: border-box;
    }
}