*{
    margin: 0;
    padding: 0;
    font-family: poppins, sans-serif;
}
.header{
    min-height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(1.jpg);
    background-position: center;
    background-size: cover;
    position: relative;
}
nav{
    display: flex;
    padding: 2% 6%;
    justify-content: space-between;
    align-items: center;
}
nav img{
    height: 60px;
}
.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
}
.nav-links ul li::after{
    content: '';
    width: 0%;
    height: 2px;
    background: red;
    display: block;
    margin: auto;
    transition: 0.4s;
    -webkit-transition: 0.4s;
    -moz-transition: 0.4s;
    -ms-transition: 0.4s;
    -o-transition: 0.4s;
}
.nav-links ul li.hover::after{
    width: 100%;

}
.text-box{
    width: 90%;
    color: yellowgreen;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,50%);
    text-align: center;
}
.text-box h1{
    font-size: 30px;
}
.text-box p{
    margin: 10px 0 40px;
    font-size: 14px;
    color: brown;
}
.hero-btn{
    display: inline-block;
    text-decoration: none;
    color: black;
    border: 1px solid yellow;
    padding: 12px 34px;
    font-size: 13px;
    background: transparent;
    position: relative;
    cursor: pointer;
}
.hero-btn:hover{
    border: 1px solid orange;
    background: orange;
    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: #f44336;
        height: 100vh;
        width: 200px;
        top: 0;
        right: -200px;
        text-align: left;
        z-index: 2;
        transition: 1s;
        -webkit-transition: 1s;
        -moz-transition: 1s;
        -ms-transition: 1s;
        -o-transition: 1s;
}
    nav .fa{
        display: block;
        color: #fff;
        margin: 10px;
        font-size: 22px;
        cursor: pointer;
    }
    .nav-links ul{
        padding: 30px;

    }
}
.Course{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top: 100px;
}
h1{
    font-size: 36px;
    font-weight: 600;
}
p{
    color: orangered;
    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: seagreen;
    border-radius: 10px;
    margin-bottom: 5%;
    padding: 20px 12px;
    box-sizing: border-box;
    transition: o.5s;
}
h3{
    text-align: center;
    font-weight: 600;
    margin: 10px 0;
}
.Course-col:hover{
    box-shadow: 0 0 20px 20px rgba(31, 1, 1, 0.2);
}
@media(max-width: 700px){
    .row{
        flex-direction: column;
    }
}
.sub-header{
    height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(6.jpg);
    background-position: center;
    background-size: cover;
    text-align: center;
    color: yellowgreen;
}
.sub-header h1{
    margin-top: 50px;

}
.sub-header h3{
    text-align: center;
}
.sub-header h2{
    text-align: left;
    font-size: solid;
}
.sub-header p{
    text-align: left;
}
.about-us{
    width: 80%;
    margin: auto;
    padding-top: 80px;
    padding-bottom: 80%;
}
.about-col{
    flex-basis: 48%;
    padding: 30px 2px;
}
.about-col h1{
    padding: 0;
}
.about-col p{
    padding: 15px 0 25px;
}
.about-col ul li{
    color: #f44336;
    margin: auto;
    text-decoration: none;
}
.gallery{
    width: 25%;
    float: left;
    margin: 30px;
}
.gallery:hover{
    box-shadow: 0 0 20px rgba(68, 1, 35, 0.6);
}
.Header{
    height: 109vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(6.jpg);
    background-position: center;
    background-size: cover;
    text-align: center;
    color: green;
}
.img.gallery{
    width: 100%;
    width: 320px;
    height: 250px;
}
.head{
    height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(6.jpg);
    background-position: center;
    background-size: cover;
    text-align: center;
    color: green;
}
.contact-container{
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
    padding: 32px;

}
.contact-container h2{
    text-align: center;
    margin-bottom: 25px;
    color: yellowgreen;
    font-size: 32px;
}
.form-group{
    margin-bottom: 22px;
}
input, textarea{
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #999;
    border-radius: 8px;
    font-size: 16px;
    background-color: #f0f0;
}
input:focus, textarea:focus{
    border: #00acc1;
    box-shadow: 0 0 5px rgba(0, 172, 193,0.5);
    outline: none;
}
textarea{
    resize: vertical;
    min-height:120px;
}
button{
    display: block;
    margin: auto;
    background-color: yellow;
    color: white;
    border: none;
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}
button:hover{
    background-color: green;
}