sirajkanoth

Fixed..

.tg-container {
max-width: 1200px;
margin: 0 auto;
overflow: visible;
}
#site-navigation ul.sub-menu {
z-index: 999;
height:100px;
}
.header-sticky .is-sticky #masthead {
z-index: 999 !important;
}

slider issue solved .. now sticky header is overlapped by images when we scroll