:root{
    --black: #0c0c0c;
    --grey: #3c3c3c;
    --white: #fff;
    --main: #9100ff;
}

body{
    margin: 0;
    background:linear-gradient(90deg, var(--black), var(--grey));
    font-family: 'Roboto', sans-serif;
    animation: gradientAnimation 10s ease infinite;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
}
main {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100vh;
}   

img{
    max-width: 95%;
    height: auto;   
}

@keyframe gradientAnimation{
    0%{
        background-position: 0% 50%;
    }
    50%{
        background-position: 100% 50%;
    }
    100%{
        background-position: 0% 50%;
    }
}