h1.myh1 { 
	color: brown; 
	font-family: Impact, Charcoal, sans-serif;
	background-color: aqua;
	padding-left: 3vw;
	font-size: calc(10px + 1.1vw );
	font-weight: 800;
}
h2.myh2 { color: aqua; }
h3.myh3 { color:#0F0; background-color:#009; border-radius: 5px; margin: auto; font-family: Impact, Charcoal, sans-serif;}
h4 { color:#63081c; background-color: white;}
a { color:cyan; }

<meta name="viewport" content="width=device-width, initial-scale=1">

body  {
	background-image: url("../Images/some_pcb1.jpg");
    background-color:  #2196F3; /* #1A237E; */
	margin: 2px;
}

div.center_content {
	text-align: center;
	color: antiquewhite;
	font-size: calc(6px + 1.1vw );
	font-family: "Times New Roman", Times, serif;
}

.feedform{
        text-align: center;
        /* width: 80%; */
        color: #0FF;
}

.td_Name {
        text-align: right;
        color: #1db6b9;;
        padding-right: 30px;
        font-weight: bold;
}
.feedtxt
{
        border-radius: 5px;
}

.mytext {
	background-color: #222;
	padding: 10px;
	border-radius: 3px;
	color:white;
	line-height: 200%;
	opacity: .9;
	font-weight:600;
	text-align: left;
	align-content: center;
	margin: auto;
	width: 80vw;
}

.ul_a {
    list-style-type: circle;
}

.li_a {
	float: none;
	color:chartreuse;
//	background-color: blue;
}