Fix spacing on burger dropdown menu

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Hi.  I have the following CSS code to create a desktop burger and dropdown menu.  How do I get rid of the white space above the linear black to red gradient when you click on the hamburger?  Thanks.

CURRENT CODE

.header .header-burger{display:flex} .header-nav, .header-actions {display:none}
.header--menu-open .header-menu {font-family: roboto;
opacity: 1;
visibility: visible;
width: 30%;
margin-left: 70%;
box-shadow: -5px 5px 15px #000000
}
div.header-menu-nav-item a { color:white!important;
    font-size: 20px !important;
    padding: 10px;
}
 .header-menu-nav-folder-content{background:linear-gradient(to bottom, #000000,#7a1009);} 
.header-menu-nav-item {line-height: 20px!important;}
/* If you only want to have the desktop burger visible this CSS will remove all the */
@media (min-width: 767px) {
  .header-nav-list a:not([href='/burger']) {
    display: none;
  }
}
@media screen and (min-width:992px) {
.header-menu-actions {
    justify-content: center !important;
}
.header-menu-cta {
    position: relative;
    top: -100px;
}
}

Add to Design > Custom CSS

.header-menu.header-menu--folder-list {
    padding-top: 0 !important;
}