*{
    
    font-family: sans-serif;
    box-sizing: border-box;
}
img{
    width:100%;
}
.hero{
    height: 150vh;
    background-image: url(/images/jeet-brosher.jpeg);
    background-size: cover;
    background-position: center;   
    position: relative;
    overflow: hidden;
    color: #000729;
}

.navbar{
    width: 85%;
    height: 15%;
    margin-left: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: blue;
}
button{
    color: blue;
    padding: 10px 25px;
    background: transparent;
    border: 1px solid blue;
    border-radius: 20px;
    cursor: pointer;
}
.content{
    color: #fbfcfd;
    position: absolute;
    top: 50%;
    left: 8%;
    transform: translateY(-50%);
    z-index: 2;
    color: #000729;
}
h1{
    font-size: 300%;
    margin: 10px 0 30px;
    line-height: 80px;
}
.sidebar{
    width: 50px;
    height: 100vh;
    background: linear-gradient(#00545d, #000729);
    position: fixed;
    right:0vw;
    top: 0;
}
.socil-link img, .useful-link img{
    width: 35px;
    margin: 5px auto;
    cursor: pointer;
}
.socil-link{
    width: 50px;
    text-align: center;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.useful-link{
    width: 50%;
    text-align: center;
    position: absolute;
    bottom: 30px;
    margin-left: 6px;
}
.bubbles img{
    width: 50px;
    animation: bubble 7s linear infinite;
}
.bubbles{
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    position: absolute;
    bottom: -60px;
}
@keyframes bubble{
    0%{
        transform: translateY(0);
        opacity: 0;
    }
    35%{
        
        opacity: 1;
    }
    75%{
        
        opacity: 1;
    }
    100%{
        transform: translateY(-80vh);
        opacity: 0;
    }
}
.bubbles img:nth-child(1){
    animation-delay: 2s;
    width: 20px;
}
.bubbles img:nth-child(2){
    animation-delay: 2s;
    width: 25px;
}
.bubbles img:nth-child(3){
    animation-delay: 1s;
    width: 35px;
}
.bubbles img:nth-child(4){
    animation-delay: 3s;
    width: 40px;
}
.bubbles img:nth-child(5){
    animation-delay: 4.5s;
    width: 50px;
}
.bubbles img:nth-child(6){
    animation-delay: 3.5s;
    width: 45px;
}
.bubbles img:nth-child(7){
    animation-delay: 6s;
    width: 33px;
}




     
        .section-1{
            height: 150%;
            width: 100;
            background-image: url(/images/jeet-brosher.jpeg);
            background-attachment: fixed;
            background-size: cover;
        }
        .section-3{
            height: 150vh;
            width: 100vw;
            background-image: url(/images/jeet-cascading.jpeg);
            background-attachment: fixed;
            background-size: cover;
        }

      .section-2, .section-4{
            width: auto;
            background-size: cover; 
            
      }