*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

  .full-screen-video-container{
    position: fixed;
    opacity: 0.9;
    height: 100vh;
    width: 100vw;
    overflow-x: scroll;
    -ms-overflow-style: none;  /* Internet Explorer 10+ */
    scrollbar-width: none;  /* Firefox */
}

.full-screen-video-container::-webkit-scrollbar { 
    display: none;  /* Safari and Chrome */
}

  .full-screen-video-container video {
    opacity: 0.9;
    z-index: -1;
    position: fixed;
    width: 100%;
    height: 600%;
    min-width: 100%;
    min-height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
@media (min-aspect-ratio: 16/9) {
    #videoBG {
        width:100%;
        height: auto;
    }
}
@media (max-aspect-ratio: 16/9) {
    #videoBG { 
        width:auto;
        height: 100%;
    }
}
  
/*----------------menu----------------*/
nav{
  position: relative;
    overflow-x: hidden;
    padding: 0;
    margin: 0;
} 

a{
    text-decoration: none;
}

li{
    list-style: none;
}

nav{
    background : rgba(240, 235, 235, 0.861);
    height:  80px;
    width: 100%;
}

label.logo{
    color: white;
    font-size: 35px;
    line-height: 80px;
    padding: 0 100px;
    font-weight: bold;    
}

nav ul{
    margin-top: 15px;
    float: right;
    margin-right : 20px;
}

nav ul li{
    display: inline-block;
    line-height: 45px;
    margin: 0 5px;
}
 
nav ul li a{
   
    color : rgb(30, 30, 30);
    font-size: 17px;
    text-transform: uppercase ;
    padding: 7px 13px;
    border-radius: 3px;
} 

nav ul li a:hover{
    background : rgb(176, 175, 175);
    color: black;
    transition: 0.4s;
    font-size: 25px;

}
.checkbtn{
    font-size: 30px;
    color: white;
    float: right;
    line-height: 80px;
    margin-right: 40px;
    cursor: pointer;
    display: none;
}
#check{
    display: none;
}
.wrapper {
  max-width: 75rem;
  padding: 2rem;
  margin: 0 auto;
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(4, 12.5rem);
  gap: .5rem;
}

/* Gallery Layout */
.gallery__item--1 {
  grid-column: 1 / span 1;
  grid-row: 1 / span 1;
}

.gallery__item--2 {
  grid-column: 1 / span 1;
  grid-row: 2 / span 1;
}

.gallery__item--3 {
  grid-column: 2 / span 1;
  grid-row: 1 / span 2;
}

.gallery__item--4 {
  grid-column: 3 / span 1;
  grid-row: 1 / span 3;
}

.gallery__item--5 {
  grid-column: 1 / span 2;
  grid-row: 3 / span 2;
}

.gallery__item--6 {
  grid-column: 3 / span 1;
  grid-row: 4 / span 1;
}

/* Gallery Link */
.gallery__link {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Gallery Link Overlay */
.gallery__overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  background: rgba(0, 0, 0, 0.4);
  font-size: 1.5rem;
  color: #fff;
  font-weight: 700;
  text-transform: uppercase;

  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.gallery__link:hover .gallery__overlay {
  opacity: 1;
}

/* Gallery Overlay Text */
.gallery__overlay span {
  position: relative;
  line-height: 3rem;
}

.gallery__overlay span:before,
.gallery__overlay span:after {
  content: '';
  position: absolute;
  height: 2px;
  width: 0;
  background: #fff;
  transition: width .3s ease-out .2s;
}

.gallery__overlay span:before {
  top: 0;
  left: 0;
}

.gallery__overlay span:after {
  bottom: 0;
  right: 0;
}

.gallery__link:hover .gallery__overlay span:before,
.gallery__link:hover .gallery__overlay span:after {
  width: 100%;    
}


/* Gallery Image */
.gallery__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: 
      transform .5s,
      filter .5s;
}

.gallery__link:hover .gallery__image {
  transform: scale(1.2);
  filter: blur(2px);
}

@media screen and (max-width: 60rem) {
  .wrapper {
      padding: 1rem;
  }

  .gallery {
      grid-template-columns: repeat(2, 1fr);
  }

  /* Gallery Layout */
  .gallery__item--1 {
      grid-column: 1 / span 1;
      grid-row: 1 / span 1;
  }

  .gallery__item--2 {
      grid-column: 1 / span 1;
      grid-row: 2 / span 1;
  }

  .gallery__item--3 {
      grid-column: 2 / span 1;
      grid-row: 1 / span 2;
  }

  .gallery__item--4 {
      grid-column: 1 / span 1;
      grid-row: 3 / span 2;
  }

  .gallery__item--5 {
      grid-column: 2 / span 1;
      grid-row: 3 / span 1;
  }

  .gallery__item--6 {
      grid-column: 2 / span 1;
      grid-row: 4 / span 1;
  }

  .gallery__overlay {
      font-size: 1.25rem;
  }
}

@media screen and (max-width: 35rem) {
  .gallery {
      display: block;
  }

  .gallery__item {
      margin: .5rem;
  }

  .gallery__link {
      height: 80vw;
  }

  .gallery__overlay {
      font-size: 1rem;
  }
}
@media (max-width: 952px) {
    label.logo{
    font-size: 30px;
    padding-left: 50px;
    }
}
    
nav ul li a{
    font-size: 16px;
}
@media (max-width: 858px) {
    .checkbtn{
        display: block;
    }
    nav ul{
        opacity: 1;
        position: fixed;
        width: 50%;
        height: 90vh;
        background: rgb(210, 208, 208);
        border-bottom-right-radius : 550px ;
        top: 65px;
        left: -118%;
        text-align: center;
        transition: all 1s;
    }
    nav ul li{
        margin: 50px 0;
        display: block;
        line-height: 30px;

    }
    nav ul li a{
        font-size: 15px;
        transition: 0.2s;
    }
    nav ul li a:hover{
        background : rgb(191, 201, 207);
        color: black;
        font-size: 35px;
    }
    #check:checked~ul{
        left: 0;
    }
}
.logo img{
    float: left;
    margin: 5px;
    border-radius: 30px;
    width: 150px;
}
i{
    transition: 0.05s;
    color: rgba(43, 43, 43, 0.635);
}
i:hover{
    color: black;
}
i:active{
    transform: rotate(90deg);
}

/*techbrain_about*/

.techbrain_about{
  padding-top: 8%;
  width: 100%;
  background: linear-gradient(to bottom, #6085b2 0% ,white 70%);
}

.techbrain_about h1{
  padding-left: 5%;
  color: #0c233e;
  font-size: 10vmin;
}
.techbrain_about h2{
  padding-left: 5%;
  color: #365e8e;
  font-size: 6vmin;
  margin-right: 1%;
}
.techbrain_about h3{
  color: #4f4f4f;
  font-size: 4vmin;
}

.techbrain_about h2 , .techbrain_about h3{
  display: inline;
}

/* footer */
@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');

.footer-area {
  font-family: 'Poppins', sans-serif;
  box-sizing:border-box;
  padding: 100px 0;
  background: #c6c6c6;
  background: -moz-linear-gradient(left,  #c6c6c6 0%, #6085b2 100%);
  background: -webkit-linear-gradient(left,  #c6c6c6 0%,#6085b2 100%);
  background: linear-gradient(to right,  #c6c6c6 0%,#6085b2 100%);
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2749c4', endColorstr='#6085b2',GradientType=1 );
  color:rgb(0, 0, 0);
  position:relative;
}
.main {
  width: 1200px;
  margin: 0 auto;
}
.footer {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  flex-direction: row;
}
.single-footer {
  width: 30%;
}
.single-footer h4 {
  text-transform: capitalize;
  font-size: 22px;
  margin-bottom: 20px;
}
.footer-social a {
  color: #fff;
  border: 1px solid #fff;
  width: 40px;
  height: 40px;
  display: inline-block;
  text-align: center;
  line-height: 40px;
  border-radius: 50%;
  margin-right: 10px;
}
.footer-social {
  margin-top: 20px;
}
.single-footer ul {
  list-style: none;
}
.single-footer ul li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
}
.single-footer ul li a {
  color: #fff;
  text-transform: capitalize;
  text-decoration: none;
}
.single-footer ul li a i {
  position: absolute;
  left: 0;
  top: 5px;
}

.copy {
  text-align: center;
  text-transform: capitalize;
  margin-top: 50px;
}

.footer-wave-box {
  position: absolute;
  left: 0;
  top: 0;
  height: 45px;
  right: 0;
  width: 100%;
  overflow:hidden;
}
.footer-wave {
  background-image: url('../../footer_img/footer-shape.png');
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 200%;
  background-size:50%;
  background-position:bottom;
  background-repeat:repeat-x;
}

.footer-animation{
    animation: footer_wave 5s linear infinite;
    -o-animation: footer_wave 5s linear infinite;
    -webkit-animation: footer_wave 5s linear infinite;
    left:auto;
    right:0;
}
@keyframes footer_wave{
  0%{
      -moz-transform:translateX(0%);
  }
  50%{
    -moz-transform:translateX(25%);
  }
  100%{
    -moz-transform:translateX(50%);
  }
}

@keyframes footer_wave{
  0%{
    -o-transform:translateX(0%);
  }
  50%{
    -o-transform:translateX(25%);
  }
  100%{
    -o-transform:translateX(50%);
  }
}

@keyframes footer_wave{
  0%{
      -webkit-transform:translateX(0%);
  }
  50%{
    -webkit-transform:translateX(25%);
  }
  100%{
    -webkit-transform:translateX(50%);
  }
}
@media only screen and (max-width:1500px){
  .techbrain_about{
    padding-top: 15%;
    margin-bottom: 10%;
  }
  .footer-wave-box {
    display: none;
  }
  .footer-area{
    border-top-right-radius: 300px ;
  }
}
@media only screen and (max-width:1000px){
  .techbrain_about{
    padding-top: 25%;
  }
  .main{
    width:320px;
  }
  .footer-wave-box {
    display: none;
  }
  .single-footer:first-child, .single-footer {
    width: 100%;
    margin-bottom:30px;
  }
}
* {
  box-sizing: border-box;
}

.column img{
  float: left;
  width: 33.33%;
  padding-top: 4%;
  padding-right: 4%;
  text-size-adjust: 20px;
  /* margin-top: 5%; */
}.column p{
  padding-top: 2%;
}
.title h1{
  padding-left: 4%;
}
.row{
  margin-bottom: 10%;
  margin-top: 
  10%;
  margin-left: 5%;
  font-family: "Trirong", serif;
}
.column{
  text-decoration: solid;
  font-size: 150%;
  padding: top 15%;
  padding-left: 5%;
  position: relative;
  right: 5%;
  

}
.title{
  font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
  text-decoration:underline;
}