.banner {
            position: relative;
            background-image: url('https://periyarworld.org/assets/img/collaboration/collaboration-banner.jpg');  
            background-size: cover;
            background-position: center;
            height: 450px;  
        }
        .overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(20deg, rgba(0, 0, 0, 0.00) 29.09%, rgba(0, 0, 0, 0.71) 92.09%), linear-gradient(270deg, rgba(0, 0, 0, 0.00) 0.16%, rgba(0, 0, 0, 0.72) 79.33%);
            /*display: flex;
            align-items: center;
            justify-content: center;*/
        }
        .overlay h1 {   
            position: absolute;
            top: 57%;transform: translateY(-50%);
            left: 95px; 
color: #FFF;
font-family: 'Poppins Medium';
font-size: 38px;
font-style: normal;
font-weight: normal;
line-height: 150%; 
        }

 .bg-sec-1{position: relative;top: -25px}
 .bg-sec-1 p{color: #111;
    font-family: 'Sen Regular';
font-size: 15px;
font-style: normal; 
line-height: 180%; }

 .bg-sec-1 h4{color: #333;
    font-family: 'Poppins Medium';
font-size: 25px;
font-style: normal; 
line-height: 120%; }

.arrow-img-w{width: 22px;}

.black-color-section::before{content: '';position: absolute;top: -10px;height: 100%;width: 60.5%;right: 0px;
background:#000;}
.black-color-section {
    /*background-color: black;*/
    padding: 35px 0;
    width: 90%;
    /* float: right; */
    margin: auto 0 auto auto;
    position: relative;
    top: -48px; 
}

.black-box-one {
    width: 100%;
    /*background-color: black;*/
    padding: 70px 0;
}

.black-left{
    padding-left: 11%;
}

.black-right p {margin-bottom: 0px;
    color: #eee;
    font-family: 'Sen Regular';
font-size: 15px;
font-style: normal; 
line-height: 180%; 
}

.black-left h1 {
    color: #1A1A1A; 
    font-family: 'Poppins SemiBold';
font-size: 20px;font-weight: normal;
font-style: normal; 
line-height: 130%;  
padding: 0 25px;
}

.black-left h2 {
    color: #1A1A1A;
    font-weight: normal;
    font-family: 'Poppins Medium';
font-size: 16px;
font-style: normal; 
line-height: 130%;  
text-transform: uppercase;
padding: 0 25px;
}

.side-logo {
    position: absolute;
    left: -73px;
}

.arrow {
    position: absolute;
     top: 50%;
    transform: translateY(-50%);
    left: -50px;
}
 

@media only screen and (min-width:1600px) { 
    .arrow { left: -68px;}
    .black-left { padding-left: 3%;}
}
 
 

@media only screen and (min-width:992px) and (max-width:1150px){ 
.arrow { left: -42px;}
.periyar-big img.w-100{height: 420px;
    object-fit: cover;}
}

@media only screen and (min-width:768px) and (max-width:991px){ 
 
.black-left h1 { color: #E8C29B; } 
.black-left h2 { color: #FFF; }
.arrow-img-w {width: 8px;}
.black-color-section::before { width: 250%;left: -100px;} 
.side-logo {
    position: absolute;
    left: -65px;
}

} 

@media only screen and (min-width:600px) and (max-width:767px){
 
.black-left h1 { color: #E8C29B; } 
.black-left h2 { color: #FFF; }
.arrow-img-w {width: 8px;}
.black-color-section::before { width: 150%;left: -73px;} 
.side-logo {
    position: absolute;
    left: -65px;
}


} 



@media only screen and (max-width:600px){
.banner { height: 350px;}
 
.black-left h1 { color: #E8C29B; } 
.black-left h2 { color: #FFF; }
.arrow-img-w {width: 8px;}
.black-color-section::before { 
    width: 100%;}
.bg-sec-1 h4 { 
  font-size: 20px; 
  line-height: 130%;
}

}  

@media only screen and (min-width:1800px) {
body{max-width: 100%;margin-left: auto;margin-right: auto;}
}


@media (max-width:991px) { 
    .black-color-section::before {display: none;}
    .black-color-section {
        top: -8px;background: #000;padding: 0px 0px 70px 0;
    }
    .black-box-one { 
        padding: 70px 0 0;
      }

    .periyar-big {
        margin: 0 auto;
    }

    .periyar-big-content {
        text-align: center;
        margin: 0 auto;
    }

    .black-left {
        padding-left: 3%;
    }

    .arrow {
        left: -28px;
    }

    .black-left {
        text-align: center;
    }

    .black-right {
        width: 80%;
        margin: 0 auto;
        text-align: center;
        padding-top: 40px;
    }

    .arrow {
        left: 50%;
        transform: rotate(90deg);
        top: 12px;
    }
}
 
@media (max-width:600px) {
    .mobile-view {
        display: block !important;
        position: unset;
        text-align: center;
        margin-bottom: 30px;
    }

    .mobile-view-none {
        display: none;
    }

    .black-box-one {
        padding: 30px 0;
    }

    .black-left {
        padding-left: 0%;
    }

    .black-right {
        width: 98%;
    }

    .black-color-section {
        width: 100%;margin-bottom: 30px;
    }

    .overlay h1 {font-size: 32px;
        left: 50%;
        transform: translateX(-50%) !important;
        width: 100%;
        text-align: center;
    }

    
}

@media (max-width:500px) {
    .overlay h1 {
        font-size: 26px;
    }
}

@media (min-width:1900px){
    .overlay h1{
        font-size: 43px;
    }

.bg-sec-1 h4 {
   font-size: 34px;
}
.bg-sec-1 p {
    font-size: 18px;
}
.black-right p{
    font-size: 18px;
}
.black-left h1 { 
font-size: 24px;
}
.black-left h2{
    font-size: 20px;
}
}


@media (min-width: 1700px) { 
  .container {
   max-width: 91%;
  }
}
@media (min-width: 1900px) {
  .container {
    max-width: 95%;
  }
}