.banner {
            position: relative;
            background-image: url('https://periyarworld.org/assets/img/about/about-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%; 
text-transform: uppercase;
        }
 .sec-lists-bg{position: relative;top: -70px;
           background:#fff;
           border-radius: 9px;
border: 1px solid #E31E25;
background: #FFF;
box-shadow: 0px 2px 10px 0px rgba(0, 0, 0, 0.25); 
padding: 2.5rem 3.5rem; }
.safety-sec div.d-flex img{ position: relative;
    top: 1px;}
.safety-sec div.d-flex {color: #111; 
    font-family: 'Sen Regular';
    font-size: 15px;
    font-style: normal; 
    line-height: 22px; }
    .po-stcy-t-0{position: sticky; top: 0px;}
 .sec-lists{ background-image: url('https://periyarworld.org/assets/img/about/bg-img.jpg');  
            background-size: cover;background-repeat: no-repeat;
            background-position: center;border-radius: 5px;background-attachment: fixed;}
 
.fancybox-button--zoom, .fancybox-button--thumbs, .fancybox-button--play{display: none !important;}         
.play-icon-po{position: absolute;top: 50%;left: 50%;transform: translate(-50%, -50%);z-index: 1;}
 
.circle-sec{position: relative;}
.circle-sec img{z-index: 1;position: relative;}
.circle-sec::before{content: '';position: absolute;top: 28%;left: 0px;width: 100%;height: 10px;
border-top: 4px double #252525;z-index: 0;}
.circle-sec::after{content: '';position: absolute;bottom: 28%;left: 0px;width: 100%;height: 10px;
border-top: 4px double #252525;z-index: 0;}
.circle-sec img.icon-c{ 
    /*background: #f4ebe5;*/
    padding: 4px 4px;
        background-image: url(https://periyarworld.org/assets/img/about/bg-img.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    /*border-radius: 5px;*/
    background-attachment: fixed;
}

.shadow-add{border-radius:30%; 
box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);transition: all 0.5s ease;}
.circle-sec a:hover .shadow-add{box-shadow: 0px 10px 10px 1px rgb(219 29 36 / 40%);}
.bor-double-add a{color: #111;
text-align: center;margin-left: 4px;
font-family: 'Poppins Medium';
font-size: 16px;  
font-style: normal; 
line-height: 150%;  border-bottom: 1px solid #2A2A2A;} 
.bor-double-add a:hover{color: #E31E25;border:none;transition:all 0.5s ease;}
.sec-lists-content h4{color: #E31E25;
    font-family: 'Poppins Medium';
font-size: 25px;
font-style: normal;
font-weight: normal;
line-height: 150%; }
.txt-p{color: #111;
    font-family: 'Sen Regular';
font-size: 16px;
font-style: normal; 
line-height: 180%; }

.circle-sec p{color: #252525;
    font-family: 'Sen Regular';
font-size: 16px;
font-style: normal; 
line-height: 180%;  
text-transform: capitalize;}
.gallery-sec h4{color: #FFF;
    font-family: 'Poppins Medium';
font-size: 25px;
font-style: normal; 
line-height: 150%; }
.gallery-sec p{color: #eee;
    font-family: 'Sen Regular';
font-size: 16px;
font-style: normal;
line-height: 180%; }

.timeline {
    font-family: 'Poppins Medium';
}

.timeline, .construction-heading {
    font-family: 'Poppins Medium';
    font-size: 25px;
    padding-bottom: 15px;
}
  
.bor-double-add{border-bottom: 4px double #252525;}
.gallery-sec{background-image: url('https://periyarworld.org/assets/img/about/gallery-bg-sec.jpg');  
            background-size: cover;background-repeat: no-repeat;
            background-position: center;background-attachment: fixed;}

.gallery-bigimage{
    /*max-width: 694px;
    min-width: 694px;
    max-height: 388px;
    height: 388px;*/
    /* background-color: gray; */
    /*border: 1px solid #fff;*/
    /*border-radius: 10px;*/
    overflow: hidden;
    position: relative;
}

.gallery-bigimage::before{content: '';position: absolute;top: 0px;left: 0px;width: 100%;height: 100%;
  background: linear-gradient(89deg, rgb(0 0 0 / 11%) 67.26%, #000 98.95%);   
box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);z-index: 1;
}
.gallery-bigimage img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
/*.gallery-part-header{
    max-width: 694px;
    min-width: 694px;
}*/
.gallery-imgbox{
    width: 170px;
    height: 115px; 
    border: 1px solid transparent; 
    margin-right: 3px;
    margin-top: 5px;border-radius: 4px;
    margin-bottom: 5px;
    transition: 0.5s ease;
}
.gallery-imgbox img{
    width: 100%;border-radius: 4px;
    height: 100%;
    object-fit: cover;
}
.gallery-imgbox.active,.gallery-imgbox:hover{
    border-color:#fff ;
}
.gallery-img{padding: 4px;
    width: 95%;
    height: 95%;
    /*background-color: gray;*/
    transition: 0.5s ease;
}
.gallery-imgbox.active .gallery-img,.gallery-imgbox:hover .gallery-img{
    width: 100%;
    height: 100%;
    cursor: pointer;

}
.gallery-imgbox:hover,.gallery-imgbox.active{
    cursor: pointer;
}
.gallery-group{
    display: flex;flex-direction: column;
}
.gallery-part{position: relative;}
.gallery-group{position: absolute;top: 0px;right: -50px;}


@media only screen and (min-width:1200px) and (max-width:1399px){ 
 .gallery-imgbox {
  width: 170px;}
  .gallery-bigimage { height: 614px;}
   
} 
@media only screen and (min-width:992px) and (max-width:1199px){ 
.safety-sec .align-self-center {
    align-self: inherit !important;
}
 
.circle-sec .col-md-3 { 
    height: 140px;
  } 

}

@media only screen and (min-width:1400px) { 
 .gallery-imgbox {height: 129px;
  width: 184px;}
  .gallery-bigimage { height: 690px;}
  
} 

@media only screen and (min-width:768px) and (max-width:991px){ 
 .gallery-group { position: inherit;
  top: 0px;
  right: inherit; display: flex;
  flex-direction: row;} 
   .circle-sec::before, .circle-sec::after {display: none;}
   .safety-sec .align-self-center {
    align-self: inherit !important;
}
} 

@media only screen and (min-width:600px) and (max-width:767px){
 
 .sec-lists-bg { 
  top: -50px;  
} 
 .gallery-group { position: inherit;
  top: 0px;
  right: inherit; display: flex;
  flex-direction: row;} 
 .circle-sec::before, .circle-sec::after {display: none;}
 .safety-sec .align-self-center {
    align-self: inherit !important;
}
} 



@media only screen and (max-width:600px){
.construction-heading { 
  font-size: 20px;
}
.circle-sec p { 
  font-size: 14px;
}
    .sec-lists-content h4 { 
        font-size: 19px;
    }
    .txt-p,.gallery-sec p{ 
        font-size: 15px; 
        line-height: 170%;
      }
      .gallery-sec h4{ 
        font-size: 20px;
    }
    .gallery-imgbox {
        width: 170px;
        height: 65px;
    }








    .safety-sec .align-self-center {
        align-self: inherit !important;
    }
    .bor-double-add a { font-size: 15px;display: block;padding-top: 6px;}
    .bor-double-add div{text-align: center;}

.banner { height: 350px;}
 .sec-lists-bg { 
  top: -50px; padding: 1rem 1.5rem 2rem; 
} 
.overlay h1 {font-size: 32px;
        left: 50%;
        transform: translateX(-50%) !important;
        width: 100%;
        text-align: center;
    }
    .circle-sec::before, .circle-sec::after {display: none;}
 .gallery-group { position: inherit;
  top: 0px;
  right: inherit; display: flex;
  flex-direction: row;} 
 
}  

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

 
 

@media (max-width:450px) {
    .overlay h1 {
        font-size: 28px;
    }
}

@media (max-width:992px){
     
    .gallery-group{
        justify-content: center;
    }
 .gallery-imgbox {  margin-top: 5px;
  margin-bottom: 5px;}

}
@media (max-width:768px){
    .gallery-bigimage{
             min-width: 100%;
             max-width: 100%;
    }
    .gallery-bigimage { 
  height: auto;}
  .gallery-imgbox { margin-right: 5px;
  margin-top: 5px;
  margin-bottom: 0px;}
}

@media (min-width:992px) and (max-width:1200px){ 
    .gallery-part{
        margin-top: 76px;
    }
    .gallery-imgbox {  
  margin: 2px;
  width: 130px;
  height: 82px;
}
.gallery-bigimage { max-height: 422px;} 
    

} 
@media (min-width:1399px){
.w-lg-800{max-width: 370px;}
}
@media (min-width:1200px) and (max-width:1350px){  
    .mt-lg-2 {
        margin-top: .5rem !important;
    }

} 

@media (min-width:1900px){
    .sec-lists-content h4,.gallery-sec h4 { 
    font-size: 30px;
    }
    .txt-p,.gallery-sec p,.safety-sec div.d-flex {
        font-size: 18px;
    }
    .circle-sec p{
        font-size: 18px;
    }
    .bor-double-add a{
        font-size: 24px;
    }
    .bor-double-add img{
        min-width: 42px;
    }
    .overlay h1 {
        font-size: 43px;
    }
 }