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[Pravi (PK)]

Thank You so much @Stranik. You solved my problem. See final modification,

.d-header {
    padding: 0;
    height: 0.01em;
    background-color: #323433; //#4e726a;   //Header background Colour
    box-shadow: none;
    width: 100%;
    padding-top: 1px;
    height: 48px;
}

.d-header  .wrap {
    background-color: #fff;
    max-width: 1144px;
    box-shadow: 0 2px 4px -1px rgba(0,0,0,0.25);
} 

Thank You