html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}


body{
    background-color: #35499a;
    display: flex;
    justify-content: center; 
    align-items: center;
}

img{
    width: 280px;
    height: auto;
}

.bg{
    position: absolute;
    left: -30vw;
    bottom: -22vh;
    height: 100vh;
    aspect-ratio: 1/1;
    z-index: -1;
}
.bg img{
    width: 100%;
    height: auto;
}

@media(max-width: 480px){
    img{
        width: 55vw;
    }
}