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

html{
    scroll-behavior:smooth;
}

body{
    overflow-x:hidden;

        margin:0;
    background:#f5f5f5;
}



.app{
    width:100%;
    max-width:480px;
    margin:0 auto;
    min-height:100vh;
    background:#fff;
}

img{
    display:block;
    max-width:100%;
}

a{
    text-decoration:none;
    color:inherit;
}

button{
    border:none;
    background:none;
    cursor:pointer;
    font:inherit;
}

ul{
    list-style:none;
}