✓ CSS Required to Pass WordPress Theme Check Plugin ( Copied from Underscore Theme )

style.css

.wp-caption
{
	margin-bottom: 1.5em;
	max-width: 100%;
}
.wp-caption-text
{
	text-align: center;
}
.sticky
{
	display: block;
}
.screen-reader-text
{
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute !important;
	width: 1px;
	word-wrap: normal !important;
}
.gallery-caption
{
	display: block;
}
.bypostauthor
{
	display: block;
}
.alignleft
{
	float: left;
	margin-right: 1.5em;
	margin-bottom: 1.5em;
}
.alignright
{
	float: right;
	margin-left: 1.5em;
	margin-bottom: 1.5em;
}
.aligncenter
{
	clear: both;
	display: block;
	margin-left: auto;
	margin-right: auto;
	margin-bottom: 1.5em;
}