* {box-sizing: border-box;}

body { 
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.header {
  overflow: hidden;
  #background-color: #f1f1f1;
  padding: 20px 10px;
}

.header a {
  float: left;
  color: black;
  text-align: center;
  padding-left: 12px;
  padding-right: 12px;
  text-decoration: none;
  font-size: 20px; 
  line-height: 25px;
  border-radius: 4px;
}

.header a.logo {
  font-size: 25px;
  font-weight: bold;
}

.header a:hover {
  background-color: #ddd;
  color: black;
}

.header a.active {
  background-color: #02096b;
  color: white;
}

.header-right {
  float: right;
}



#textbox {
	padding-left:20px;
	top: 250px;
	position: relative;
	width: 500px;
	width: 80%;
	font-size: 20px;
}

.center {
  margin: auto;
  width: 60%;
  #border: 3px solid #73AD21;
  padding: 10px;
  text-align: center;
  font-size: 20px;
  
}
.error{
	text-align: center;
}
form { 
margin: 0 auto; 
    text-align: center;
}
h3{
	text-align: center;
}

table {
	margin-top:40px;
	margin-left: auto;
	font-size: 20px;

margin-right: auto;
  border-collapse: collapse;
  width: 60%;
  max-width: 800px;

}

th, td {
  padding: 4px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.footer {
   position: absolute;
   left: 0;
   bottom: 0;
   width: 100%;
   text-align: right;
   padding-right: 20px;
   font-size: 20px;
}


@media screen and (max-width:999px) {
  /* For mobile phones: */
   .main, .right, .center, table, td, th, .tr, form, input {
    width: 97%;
	font-size: 1.5em;
	padding: 15px;
	margin: 15px;
  }
}
@media screen and (max-width:999px) {
  /* For mobile phones: */
  input  {
    width: 97%;
	font-size: 1.5em;
	padding: 15px;
	margin: 15px;
  }
}

@media screen and (max-width: 999px) {
  .header a {
    float: none;
    display: none;
    text-align: left;
	font-size: 1.5em;
	padding: 15px;

  }
  
  .header-right {
    float: none;
  }
}

 

@media screen and (max-width: 999px) {
    .mobile_menu {
    display: block;
	font-size:60px;
	cursor:pointer;
  }
}

/*  BIG SCREENS */ 

@media screen and (min-width: 1000px) {
    .mobile_menu{
	font-size:30px;
	cursor:pointer;
	display:none;
	
}
}

@media screen and (max-width: 999px) {
    .logo {
    max-height:60px;
  }
}

/*  BIG SCREENS */ 

@media screen and (min-width: 1000px) {
    .logo {
	max-height: 20px;
	
}
}
 
 
 
 
 
 
 





.overlay {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: rgb(0,0,0);
  background-color: rgba(0,0,0, 0.9);
  overflow-x: hidden;
  transition: 0.5s;
}

.overlay-content {
  position: relative;
  top: 25%;
  width: 100%;
  text-align: center;
  margin-top: 30px;
}

.overlay a {
  padding: 8px;
  text-decoration: none;
  font-size: 36px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.overlay a:hover, .overlay a:focus {
  color: #f1f1f1;
}

.overlay .closebtn {
  position: absolute;
  top: 20px;
  right: 45px;
  font-size: 60px;
}