* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
html, body {
 height: 100%; 
font-family: arial;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
.container {
  background-color: light-blue; 
  xborder: 1px solid;
  max-width: 600px;
  xheight: 100%;
  margin: 100px auto 0 auto;
}


.bestaetigung {
  xdisplay: -webkit-flex;
  xdisplay: flex;

  x-webkit-align-items: center;
  xalign-items: center;
  background-color: orange; 
  xmargin: 200px auto 0px auto;
  xmargin: auto auto auto auto;
  xheight: 400px;
  xheight: 100%;
  xdisplay: table-cell;
  xtext-align: center;
  xvertical-align: middle;
}


.vertCenter {
  xbackground-color: orange;
  border: #a0a0a0 solid 1px;
  height: 100%;
  text-align: center;
  xmargin: 20px;

}
.vertCenter:before {
  content: '\200B';
  content: '';
  margin-left: -0.25em;
  height: 100%; 
  display: inline-block;
  vertical-align: middle;
}

.bestaetigung {
  display: inline-block;
  vertical-align: middle;
  xwidth: 300px;
  padding: 30px 15px;
  xborder: #a0a0a0 solid 1px;
  background-color: orange;
  text-align: center;
}

h2 {
  font-family: arial;
  font-size: 22px;
  xcolor: red;
  xtext-align: center;
}

h3 {
  font-family: arial;
  font-size: 26px;
  xcolor: red;
  xtext-align: center;
}
h4 {
  font-family: arial;
  font-size: 20px;
  xcolor: red;
margin: 0 0 30px 0;
}

p {
  font-family: arial;
  font-size: 18px;
  xcolor: red;
  xtext-align: center;
}

a {
  font-family: arial;
  font-size: 18px;
  color: green;
  text-align: center;
  text-decoration: none;
}

/* Das Kontaktformular */ 
form {
  background-color: #eee;
  xwidth: 370px; /* Breite des Formulars */
  padding: 20px;
  border: 1px solid #8c8c8c;
  margin-top: 0px;
  text-align: left;
}
label { /* Beschriftung auf eigener Zeile */
  display: block;
  font-size: 14px;
  margin: 0 auto 2px auto;
  cursor: pointer; /* Mauszeiger wird zur Hand */
}
.radio label {
  display: inline-block;
  cursor: default;
}
input {
  xwidth: 250px;
  xheight: 7em;
  margin: 0 auto 20px auto;
}
input, textarea {
 xborder: 2px inset;
  xborder: 0.1em solid;
}
input:focus, textarea:focus {
  xbackground-color: #d9d9d9;
}
input[type="submit"] {
  xborder: 2px outset buttonface;
}
input[type="submit"]:focus {
  align-items: flex-start;
  xborder: 10px outset buttonface;
  xborder: 1px solid buttonface;
  xbackground-color: red;
  box-sizing: border-box;
}
input[type="radio"] {
  margin: 0px 15px 20px 3px;
}

input[type="text"] {
  width: 250px;  
}
input[type="submit"] {
  xwidth: 100px;  
  cursor: pointer;
  text-align: left;
}

textarea {
  display: block;
  width: 250px; 
  xheight: 7em;
  margin: 0 0 40px 0;
}

input#absender,
textarea {
  xwidth: 300px;
  xborder: 1px solid #8c8c8c;
  xmargin-bottom: 1em;
}
textarea {
  xheight: 7em;
}