.header .simple-logo {
    background: url(https://pustaknepal.com/wp-content/uploads/2020/07/100-px-01.png);
    background-size: cover;
    background-repeat: no-repeat;
        width: 54px;
}

body{
    margin: 0!important;
    width: 100%!important;
    max-width: 100%!important;
    padding: 0!important;
}