*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
} 
body{
    position: relative;
  
}
nav{
    position: fixed;
    top: 0;
    width: 100vw;
    background-color: white;
    box-shadow:  9px 8px 9px rgba(0,0,0,0.6)
}
.navbar img{
    display: flex;
    align-items: left;
    justify-content: left;
    margin-left: -200px;
    width: 120px;
    height: 60px;
}

.navbar h3{
    font-family: 'Kalam', cursive;
    /* font-family: Source Sans Pro,Arial,sans-serif;  */
    font-size: 15px;
    width: 100%;
    /* margin: auto; */
} 
.nav-menu li{
    list-style: none;
}
.nav-menu li a{
    font-family: Source Sans Pro,Arial,sans-serif;
    font-size: 25px;
    text-decoration: none;
    color: black;
}
.container{
    width: 1200px;
    margin: auto;
}
/* popup code  */
.navbar{
    width: 95%;
    margin: auto;
    min-height: 30px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}
.nav-menu{
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
    
}
.nav-menu li{
    position: relative;
}
.nav-menu li:hover .submenu{
    opacity: 1;
    cursor: pointer;
}
.submenu{
    position: absolute;
    width: 300px;
    background-color: white;
    color: #000000;
    top: 145%;
    opacity: 0;
    transition: 0.5s;
}
.submenu li{
   padding: 5px 0px 5px 10px;
   font-size: 15px;
   transition: 0.5s ease-out;
}
.submenu li:hover{
    border-left: 5px solid hsla(197, 82%, 50%, 0.6);
    background-color: rgb(121, 189, 216,0.7);
}
.font-page{
    /* width: 88vw; */
    height: 100vh;
    padding: 10px 0px;
    background-image: url("ANN\ network.gif");
    background-position: center;
    background-size: cover;
     

}
.container{
  margin-top: 15%;
}
#head1{
    color: white;
    font-size: 40px;
    font-family: 'Kalam', cursive;
    /* padding: 2px 0px; */
} 

#para1{
    color: white;
    font-size: 20px;
    font-family: 'Kalam', cursive;
    padding: 110px 10px;
    /* margin-left: 100px; */
}
#btn{
    background-color: skyblue;
    border: none;
    outline: none;
    padding: 5px 50px;
    border-radius: 5px;
    margin: 50px 0px 0px 100px;
     
}
#btn a{
    text-decoration: none;
    color: black;
    font-size: 18px;
    /* font-weight: bold; */
}

/* section about  */
.about, .research, .procedure{
    height: 70vh;
}
 
.about-container, .research-container, .procedure-container{
    /* margin-top: 7%; */
}
.about-head h1, .research-head h1, .pro-head h1{
  font-size: 30px;
  text-transform: uppercase;
  font-family: 'Kalam', cursive;
  padding: 5px 20px;
  color: white;
}
.about-head h2, .research-head h1, .pro-head h1{
    margin-top: 40px;
    font-size: 30px;
    text-transform: uppercase;
    font-family: 'Kalam', cursive;
    padding: 5px 20px;
    color: black;
  }
/* .about-head h1:hover,.research-head h1:hover, .pro-head h1:hover {
  border-bottom: 5px solid skyblue;
  width: 50%;
  cursor: pointer;
} */
.about-para, .research-para, .pro-head{
    padding: 30px 0px;
}
.about-para p, .research-para p{
    font-size: 25px;
    width: 900px;
    margin: auto;
    line-height: 30px;
    height: 300px;
}

/* sub-section introduction  */
.research-head1 h2{
    font-size: 30px;
    text-transform: uppercase;
    font-family: 'Kalam', cursive;
    padding: 5px 20px;
    color: white;
}
.introduction, .research-merits,.need, .howANN-works, .input,.about{
    height: 70vh;
}
.architecture{
    height: 100vh;
}
.research-ann{
    height: 70vh;
}
.design-method{
    height: 150vh;
}
.intro-container, .need-container, .research-ann-container, .research-merits-container, .howANN-works-container, .input-container, .archi-container, .design-method-container{
    margin-top: 10%;
}
.intro-head h2, .need-head h1,.research-head1 h1, .merits-head h1, .works-head h1, .input-head h3, .archite-head h1,.design-head h1{
    font-size: 30px;
    text-transform: uppercase;
    font-family: 'Kalam', cursive;
    text-align: center;
    padding: 5px 20px;
    margin-top: 50px;
}
.intro-head, .need-head, .research-head, .merits-head, .works-head, .input-head, .archite-head, .design-head{
    padding: 30px 0px;
}
.intro-para p, .need-para p, .research-para p, .merits-para p, .works-para p, .design-para p{
    font-size: 25px;
    width: 900px;
    margin: auto;
    line-height: 30px;
    height: 300px;
}
.archite-para p{
    font-size: 25px;
    width: 800px;
    margin: auto;
    line-height: 30px;
    height: 100px;
}
.table{
    margin: auto;
    display: grid;
    place-items: center;
}
.table2{
    margin: auto;
    display: grid;
    place-items: center;
}
table{
    width: 1000px;
    box-shadow: -1px 12px 12px -6px rgba(0,0,0,0.5);
}
table,td,th{
    padding: 10px;
    border: 1px solid lightgray;
    border-collapse: collapse;
    text-align: center;
    font-size: 20px;
    cursor: pointer;
    margin: 0px;
}
th{
    background-color: skyblue;
}
.input-1{
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin: auto;
}
#image1, #image2{
    width: auto;
    margin: auto;
}
.input-1 p{
    font-size: 15px;
    padding: 20px;
    width: auto;
    margin: auto;
}
.data-sample h1{
    font-size: 20px;
    text-transform: uppercase;
    font-family: 'Kalam', cursive;
    text-align: center;
    padding: 15px 20px;
    margin-top: 30px;
}
.data-sample img{
    width: auto;
    padding: 10px 20%;
}
.para1{
    padding: 10px;
    font-size: 16px;
    margin-left: 20%;
    margin-bottom: 20px;
}
.pro-para h2{
    font-size: 20px;
    text-transform: uppercase;
    font-family: 'Kalam', cursive;
    padding: 5px 20px;
}
@media only screen and (max-width:800px ){
    .navbar{
        width: 100%;
        font-size: 14px;
    }
    .logo h3{
        font-size: 15px;
    }
}