frappe/webnotes/public/css/slickgrid.css

.slick-cell { 
	font-size: 12px; 
}

.slick-header-column, .slick-cell {
  -webkit-box-sizing: content-box;
     -moz-box-sizing: content-box;
          box-sizing: content-box;
}

.slick-headerrow-column {
	background: #87ceeb;
	text-overflow: clip;
}

.slick-headerrow-column input {
	margin: 0;
	padding: 0;
	width: 100%;
	min-height: 20px;
}