body {
	background-color: #000;
	color: lightgray;
}

button {
	width: 99.3%;
	margin:2% 1.6% 2% 0;

}

 .note-button {
	width: 32%;
	 margin-left: 0;
	margin-right: 1.6%;
	 color: black;
     background-color: seashell;
}
 .note-button:nth-child(4n+0){
	 margin-right:0;

 }
.hertz-select {
	margin-top: 20px;
	margin-bottom: 10px;
}
.hertz-select label{
	font-weight: 300;
	margin-right: 10px;
}