*{
     margin: 0;
    padding: 0;
    font-family: sans-serif;
}
.hero{
    width: 100%;
    height: 100vh;
    background-image: url(./pexels-jess-loiterton-4321501.jpg);
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;

}
.navbar{
    width: 85%;
    height: 15%;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo{
    font-size: 50px;
    color: #fff;
    font-weight: bold;
    padding: 1rem;
    cursor: pointer;
}
button{
    color: #fbfcfd;
    padding: 10px 25px;
    background: transparent;
    border: 1px solid #fff;
    border-radius: 30px;
    outline: none;
    cursor:pointer;
}
button:hover{
    color: #000;
    background: #fff;
    transition: .5s;
    font-size: 15px;
}
.content{
    color: #fbfcfd;
    position: absolute;
    top: 50%;
    left: 8%;
    transform: translateY(-50%);
    z-index: 1000;
}
h1{
    font-size: 80px;
    margin: 10px 0 30px ;
    line-height: 80px;
}
.side-bar{
    width: 50px;
    height: 100vh;
    background: linear-gradient(#00545d,#000729);
    position: absolute;
    right: 0;
    top: 0;
    z-index: 1;
}

.menu{
display: block;
width: 35px;
margin: 40px auto 0;
cursor: pointer;


}
.social-links i,.useful-links i{
width: 25px;
margin: 5px auto;
cursor: pointer;
color: #fff;

}
.social-links{
    width: 50px;
    text-align: center;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
}

.useful-links{
    width: 50px;
    text-align: center;
    position: absolute;
   bottom: 30px;
   cursor: pointer;

}
.bubbles img{
    width: 50px;
    animation: bubbles 7s linear infinite;

}
.bubbles{
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    position: absolute;
    bottom: -70px;
}
@keyframes bubbles{
    0%{
        transform: translateY(0);
        opacity: 0;
    }
    50%{
        
        opacity: 1;
    }
    70%{
      
        opacity: 1;
    }
    100%{
        transform: translateY(-80vh);
        opacity: 0;
    }

}
.bubbles img:nth-child(1){
    animation-delay: 2s;
    width: 25px;
}
.bubbles img:nth-child(2){
    animation-delay: 1s;
}
.bubbles img:nth-child(3){
    animation-delay: 3s;
    width: 20px;

}
.bubbles img:nth-child(4){
    animation-delay: 7s;
    width: 30px;

}
.bubbles img:nth-child(5){
    animation-delay: 3.5s;
    width:30px;

}
.bubbles img:nth-child(6){
    animation-delay: 6s;
    width: 40px;

}
.bubbles img:nth-child(7){
    animation-delay: 5s;
}



@media(max-width:500px){
    button{
        margin-right: 10%;
    }
    .logo{
        padding-left: 5px;
        margin-left: 5px;
    }
}