ktokot/index.html

## index.html
<!DOCTYPE html>
<html lang="ru">

<head>
    <link rel="stylesheet" href="style.css" />
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <input type="checkbox" id="expand-toggle" />
    <label for="expand-toggle" id="expand-btn">Toggle hidden rows</label>


    <div id='cardheader'> </div>
    <div id='cardheader'>  </div>
    <div id='cardheader'>  </div>
    <div id='cardheader'>  </div>

 <div class=holder_expandable>
        <div class="expandable">
            <div  ><p>Single Characters:</p>
<fieldset>
                <menuitem class="halfStyle" emtpy-star="☆" filled-star="★">☆</menuitem >
                <menuitem class="halfStyle" emtpy-star="☆" filled-star="★">☆</menuitem >
                <menuitem class="halfStyle" emtpy-star="☆" filled-star="★">☆</menuitem >
</fieldset>
                </div>

        </div>
</div>


            <div><div id="outer">
                <div id="overlay" style="width:auto"></div>
                <div id="inner"></div>
              </div></div>
            <div>[cell text]</div>


            <div>[cell text]</div>
            <div>[cell text]</div>
            <div>[cell text]</div>


            <div>[more text]</div>
            <div>[more text]</div>
            <div>[more text]</div>


            <div>[more text]</div>
            <div>[more text]</div>
            <div>[more text]</div>


</body>

</html>

## style.css
/* Hide the toggle checkbox */
.holder_expandable {
    margin    : 0 auto 0 auto;
    padding   : auto;
    display   : inline-block;
    width     : 90vw;
    position  : relative;
    z-index   : 2;
    background: rgba(255, 255, 255, 0);
}

.item {
    float: left;
}

#expand-toggle {
    display: none;
    float  : none;
}

/* Hide expandable content by default */
.expandable {
    visibility: hidden;
    background: #ddd;
    display   : block;
}

/* Style the button */
#expand-btn {
    display         : inline-block;
    margin-top      : 12px;
    padding         : 5px 11px;
    background-color: #ff7;
    border          : 1px solid;
    border-radius   : 3px;
}

/* Show hidden content when the checkbox is checked */
#expand-toggle:checked~* .expandable {
    visibility: visible;
}

/* Style the button when the checkbox is checked */
#expand-toggle:checked~#expand-btn {
    background-color: #ccc;
    content         : "111";
}
	<!DOCTYPE html>
	<html lang="ru">

	<head>
	<link rel="stylesheet" href="style.css" />
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	</head>

	<body>
	<input type="checkbox" id="expand-toggle" />
	<label for="expand-toggle" id="expand-btn">Toggle hidden rows</label>



	<div id='cardheader'> </div>
	<div id='cardheader'> </div>
	<div id='cardheader'> </div>
	<div id='cardheader'> </div>

	<div class=holder_expandable>
	<div class="expandable">
	<div ><p>Single Characters:</p>
	<fieldset>
	<menuitem class="halfStyle" emtpy-star="☆" filled-star="★">☆</menuitem >
	<menuitem class="halfStyle" emtpy-star="☆" filled-star="★">☆</menuitem >
	<menuitem class="halfStyle" emtpy-star="☆" filled-star="★">☆</menuitem >
	</fieldset>
	</div>

	</div>
	</div>


	<div><div id="outer">
	<div id="overlay" style="width:auto"></div>
	<div id="inner"></div>
	</div></div>
	<div>[cell text]</div>


	<div>[cell text]</div>
	<div>[cell text]</div>
	<div>[cell text]</div>


	<div>[more text]</div>
	<div>[more text]</div>
	<div>[more text]</div>


	<div>[more text]</div>
	<div>[more text]</div>
	<div>[more text]</div>


	</body>

	</html>
	/* Hide the toggle checkbox */
	.holder_expandable {
	margin : 0 auto 0 auto;
	padding : auto;
	display : inline-block;
	width : 90vw;
	position : relative;
	z-index : 2;
	background: rgba(255, 255, 255, 0);
	}

	.item {
	float: left;
	}

	#expand-toggle {
	display: none;
	float : none;
	}

	/* Hide expandable content by default */
	.expandable {
	visibility: hidden;
	background: #ddd;
	display : block;
	}

	/* Style the button */
	#expand-btn {
	display : inline-block;
	margin-top : 12px;
	padding : 5px 11px;
	background-color: #ff7;
	border : 1px solid;
	border-radius : 3px;
	}

	/* Show hidden content when the checkbox is checked */
	#expand-toggle:checked~* .expandable {
	visibility: visible;
	}

	/* Style the button when the checkbox is checked */
	#expand-toggle:checked~#expand-btn {
	background-color: #ccc;
	content : "111";
	}