Rhesus Negative

.box {
	border-top: 1px solid #00aeef;
  	border-left: 1px solid #00aeef;
	width: 50%;
	margin: 100px auto;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));

}

.block {
	border-right: 1px solid #00aeef;
	border-bottom: 1px solid #00aeef;
	width: calc(100% - 1px);
	height: 50px;
}

.first {
flex: 0 1 auto;
background: green;
width: calc(100% - 21px);
}

$('.dropdown-item').parent().parent().find('> .dropdown-toggle')