Header Changes

Hey janton1,
To remove the cart & the search, Please try this code in the General Styling > Quick CSS field or in the WordPress > Customize > Additional CSS field:

.menu-item.cart_dropdown,#menu-item-search {
display: none !important;
}

To change the mobile menu 3 lines, try this css:

.header_color .av-hamburger-inner, .header_color .av-hamburger-inner::before, .header_color .av-hamburger-inner::after {
    background-color: red !important; 
}

please adjust the color to suit.
To give the mobile menu a background color, add this css:

.av-hamburger-box {
    background-color: white !important; 
    height: 30px !important; 
}

Best regards,
Mike

Hi,
Yes, that is what the last bit of code does
https://i.postimg.cc/9M19ykZG/2019-01-22-200325.jpg

.av-hamburger-box {
    background-color: white !important; 
    height: 30px !important; 
}

please adjust to suit, and clear your browser cache

Best regards,
Mike

Hi,
How about replacing your menu with a icon, I tried to create one for you at icons8.com with this css

.av-hamburger::before {
  content: url(https://i.postimg.cc/YqPp4f4h/icons8-menu-35.png); 
  display: block;
  padding-top: 15px;
}
.av-hamburger-inner {display:none!important;}

If you like the idea, take a look at their site, you might find a different one that you like more.

Best regards,
Mike