cbse_notes.css

* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
  }
  
  
/* To enhance scroll-bar  */

  
::-webkit-scrollbar {
    width: 15px;
    background:wheat;
}
  
::-webkit-scrollbar-track {
    box-shadow: inset 0 0 5px grey;
    border-radius: 10px;
}
  
/* Handle */
  ::-webkit-scrollbar-thumb {
    background: #0a0a0a99;
    border-radius: 7px;
}
  
::-webkit-scrollbar-thumb:hover {
    background: grey;
}
  
html {
    scroll-behavior: smooth;
}

/* --------------- */

body {
    margin: 0px;
    font-family: 'Roboto', sans-serif;
}
  
header h1 {
    text-align: center;
    font-size: 50px;
    color:rgb(235, 225, 204);
    font-weight: bolder;
    font-family: monospace;
    text-transform: uppercase;
    text-shadow: 5px 5px 3px rgb(133, 1, 1);

}
  
header {
    padding: 40px;
    background: url("images/ncert_header.webp") center;
    background-size: cover;
    text-align: center;
    
}

.nav{
    border-top:  2px solid rgb(119, 2, 2);
}

.nav-link-container{
    display: flex;
    justify-content: space-evenly;
    background-color: black;
}

.nav-link{
    text-transform: uppercase;
    padding: 10px;
}

a{
    text-decoration: none;
    color:rgb(255, 255, 255);
}

.hover-underline-animation {
    display: inline-block;
    position: relative;
    color: wheat;
    text-shadow: 0px 0px 12px wheat;
  }
  
.hover-underline-animation:after {
    content: "";
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: wheat;
    transform-origin: bottom right;
    transition: transform 0.25s ease-out;
}
  
.hover-underline-animation:hover:after {
    transform: scaleX(1);
    transform-origin: bottom left;
}
  

.main{
    background-image: url("images/ncert_background.jpg");
    background-repeat: repeat;
    padding: 10px;
}

.class-container{
    margin: 50px 30px;
    border: solid 4px rgb(255, 225, 208);
    border-radius: 15px;
    backdrop-filter: blur(8px);
}

.class-head{
    color:white;
    text-shadow: 0px 0px 12px rgba(255, 254, 254, 0.78);
    background-color: rgba(226, 101, 43, 0.514);
    padding: 10px;
    text-align: center;
    border-bottom:4px solid rgb(255, 225, 208);
    text-transform: uppercase;
}

/*ANIMATED BACKGROUND*/

.class-subject{
    background: linear-gradient(150deg, rgba(247, 133, 4, 0.67) ,
    rgba(255, 253, 253, 0.81),  rgba(224, 196, 164, 0.675),
     rgba(248, 115, 44, 0.528),rgba(253, 251, 251, 0.787), rgba(208, 175, 143, 0.845),rgba(248, 115, 44, 0.528));

    animation: gradient 7s ease infinite; 
    background-size: 400% 400%;
    display:flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;   
    justify-content: space-evenly;
    padding-bottom: 22px;
    padding-right: 5px;
}

@keyframes gradient{
    0%{
        background-position: 0% 50%;
    }
    50%{
        background-position: 100% 50%;
    }
    100%{
        background-position: 0% 50%;
    }
}
/*  VIEW BUTTON FOR DOWNLOADING NOTES*/
.view{
    display: flex;
    align-items: center;
    overflow: auto;
    justify-content: center;
    padding: 5px;
    border: 2px solid white;
    border-radius: 10px;
    border-style: ridge;
    background-color: white;
    color: black;
    margin: 10px;

}
.books{
    width: 22%;
    margin-top: 10px;
}

.view:hover{
    color: white;
    background-color: rgba(182, 64, 64, 0.887);
}
.books:hover{
    animation-delay: 5s;
    transform: scale(1.04);
}

.book-img{
    padding: 10px;
    box-shadow: 3px 3px 3px white;
    width: 100%;
    height: 300px;
    border-radius: 10px;
}

@media screen and (max-width: 900px){
    .books{
      width: 30%;
      margin-top: 15px;
    }
    .book-img{
      height: 300px;
    }
  }

@media screen and (max-width: 700px){
  .books{
    width: 45%;
  }
}

@media screen and (max-width: 500px){
  .books{
    width: 70%;
  }
}


/* styling footer*/

footer{
    background-color: black;
    color: whitesmoke;
    padding: 5px;
    width: 100%;
    align-items: center;
    text-align: center;
}

footer a{
    color: aqua;
}

footer a:hover{
    color: blue;
}