intro.css

/*animation work*/
@keyframes spinner{
    to{
        transform: rotate(360deg);
    }
}

.bubbles img{
width: 30px;
animation: bubble 7s linear infinite;
}

.bubbles{
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    position: absolute;
    bottom: -70px;
}

@keyframes bubble{
    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;
}


.bubbles img:nth-child(2){
    animation-delay: 3s;
    width: 5px;
}

.bubbles img:nth-child(3){
    animation-delay: 1s;
    width: 27px;
}

.bubbles img:nth-child(4){
    animation-delay: 2s;
    width: 10px;
}

.bubbles img:nth-child(5){
    animation-delay: 0.29ms;
    width: 20px;
}

.bubbles img:nth-child(6){
    animation-delay: 2s;
    width: 15px;
}

.bubbles img:nth-child(7){
    animation-delay: 3s; 
    width: 30px;  
}


/*spinner 2*/
.spinner-2:before{
    content: "";
    box-sizing: border-box;
    position: absolute;
    top: 50%;
    left: 50%;
    height: 60px;
    width: 60px;
    margin-top: -30px;
    margin-left: -30px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: coral;
    border-bottom-color: coral;
    animation: spinner 0.7s ease infinite;
}




*/
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

h1{
    color: white;
}

body{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
    font-family: sans-serif;
}


body{
    background-color: rgb(9, 1, 42);
}
 
.lok{
    background-color: rgb(24, 132, 226);
    border: none;
    width: 150px;
    margin: auto;
    margin-top: 30px;
    font-family: 'Raleway', sans-serif;
    color: white;
}

.lok:hover{
    background-color: rgb(53, 119, 186);
    border: none;
    color: white;
}

img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s;
    transform-origin: left;
}

h1{
    font-size: 24px;
    margin-bottom: 10px;
    font-family: 'Roboto', sans-serif;
}

@media (max-width:580px){
    h1{
        font-size: 20px;
    }

    .lok{
        font-size: 15px;
    }
}

@media (max-width:300px){
    h1{
        font-size: 18px;
    }

    .lok{
        font-size: 14px;
    }
}