.box { 
 width: 200px;
  height: 100px;
  border: 1px solid black;
  padding: 10px;
  margin: 10px;
}

:root {
--bs-link-color:#627254;
--bs-link-hover-color:#76885B;
}

header.masthead {
    background:linear-gradient(0deg, #627254 0%, #DDDDDD 100%);;
}

header.masthead .bg-circle {
z-index: 0;
position: absolute;
border-radius: 100%;
background: linear-gradient(0deg, #627254 0%, #DDDDDD 100%);
}