:root {

    --bgcol: #ececec;
    --Light: #8FD974;
    --Light2: #7AC968;
    --Dark2: #5BB462;
    --Dark:  #4CA456;
    --black: #394141;
    --font: #fff;
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background: linear-gradient(rgba(143, 217, 116, 0.5),rgba(78, 207, 9, 0.5), rgba(143, 217, 116, 0.5));
}

                                                    /* All page header */

header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--Dark);
    z-index: 99;
}
.logo{
    font-size: 2em;
    color: var(--font);
    user-select: none;
    font-family: 'Times New Roman', Times, serif;
}
.navigation a{
    position: relative;
    font-size: 1.1em;
    color: var(--font);
    text-decoration: none;
    font-weight: 500;
    margin-left: 40px;
}
.navigation a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 3px;
    background: #fff;
    border-radius: 5px;
    transform-origin: right;
    transform: scaleX(0);
    transition: transform .5s;
}
.navigation a:hover::after {
    transform-origin: left;
    transform: scaleX(1);
}


                                            /* footer */


footer{
    height: 25vh;
    width: 100%;
    position: absolute;
    margin-top: 1900px;
    border-radius: 30px 30px 0 0;
    background-color: rgb(91, 180, 98);
}

footer .topic{
    font-size: 28px;
    color: #fff;
    margin-top: 20px;
}

footer p{
    color: #000000;
    position: relative;
    width: 500px;
    padding: 5px;
    left: 50px;
}
footer a {
    text-decoration: none;
}
footer .link{
    position: relative;
    left: 560px;
    top: -60px;
    color: rgb(0, 0, 0);
    padding: 20px;
    
}



                                                /* Environment.html */

.contain{
    padding-left: 20px;
    font-size: 20px;
    padding-top: 120px;
}
.contain .f_intro,
.contain .air_p,
.contain .water_p,
.contain .soil_p,
.contain .air_p,
.contain .noice_p,
.contain .light_p
{
    margin-top: 20px;
    border: 2px solid var(--Light);
    border-radius: 20px;
    padding: 10px 20px;
    background-color: rgba(0, 255, 72, 0.2);
    width: 800px;
    box-shadow: -8px -10px 5px #068484;
    color: var(--black);
}
.contain .f_intro{
    font-weight: 600;
    width: 900px;
}
.contain span.F_let{
    font-family: 'Times New Roman', Times, serif;
    font-size: 40px;
    color: var(--black);
}
.pro{
    margin-left: 40px;
    position: relative;
    top: 80px;
    left: -15px;
}
.pro1,
.pro2,
.pro3{
    height: 500px;
    width: 500px;
    border-radius: 50%;
    margin-top: 15px;
    background-color: #5BB462;
    overflow: hidden;
    box-shadow: -10px -10px 12px #000000;
}
.pro2{
    margin-right: 20px;
}
.pro1,
.pro3{
    position: relative;
    left: -80px;
}
.pro img{
    height: 100%;
    width: 100%;
}
.contain span{
    font-size: 25px;
    font-weight: 700;
    color: var(--bgcol);
}
.contain .f_intro{
    color: var(--black);
    padding-bottom: 20px;
}
.contain h1{
    margin-top: -10px;
    padding-bottom: 20px;
    
}
hr.con_h{
    border: 4px solid rgb(0, 255, 0);
    border-radius: 5px;
}
.contain .f_intro1{
    border: none;
    background-color: transparent;
    padding-top: 20px;
    padding-bottom: 20px;
    font-size: 20px;
    font-weight: 800;
}
#pra{
    margin-top: 50px;
}