to hide the header add to overrides.css:
.mdl-layout__header {
display:none;
}
to change the color of header add:
.mdl-layout__header {
background-color: #1e1e1e !important;
}
to hide the header add to overrides.css:
.mdl-layout__header {
display:none;
}
to change the color of header add:
.mdl-layout__header {
background-color: #1e1e1e !important;
}