body, html {
    height: 100%
}
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-image: linear-gradient(to right, rgba(255, 238, 191, 0.3), rgba(255, 238, 191, 0.3)), url("../images/sgl-herfst-2.jpg");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
.header {
    position: sticky;
    background-color: #5b6564;
    left: 0px;
    right: 0px;
    top: -5px;
    z-index:1;
}
.header_logo { /* 1 niveau in de root */
    background-image: url("../../images/NVHR/Logo/Logo_NVHR.png"); /* origineel 75 x 91 px */
    background-repeat: no-repeat;
    /* verhouding bepalen */
    width: 50px;
    height: 60px;
    background-size: cover;
    margin: 5px;
    border: none;
}
.content {
    font-family: Arial, Helvetica, sans-serif;
    padding-bottom: 4px;
    z-index: 500;
}
.topnav {
    overflow: hidden;
    background-color: #333;
}
.topnav-button {
    background-color:#333;
    color:white;
    font-size:1.5em;
    border:none;
    margin-left:5%;
    margin-top:8px;
    font-weight:bold;
}
.topnav a {
    float: left;
    display: block;
    color: #f2f2f2 !important;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 1.5vw;
}
.active {
    background-color: #04AA6D;
    color: white;
}
.topnav .icon {
    display: none;
}
.dropdown {
    float: left;
    overflow: hidden;
}
.dropdown .dropbtn {
    font-size: 17px;    
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit;
    margin: 0;
}
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}
.dropdown-content a {
    float: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}
.topnav a:hover, .dropdown:hover .dropbtn {
    background-color: #555;
    color: white;
}
.dropdown-content a:hover {
    background-color: #ddd;
    color: black;
}
.dropdown:hover .dropdown-content {
    display: block;
}
@media screen and (max-width: 600px) {
    .topnav a:not(:first-child), .dropdown .dropbtn {
        display: none;
    }
    .topnav a.icon {
        float: right;
        display: block;
    }
}
@media screen and (max-width: 600px) {
    .topnav.responsive {position: relative;}
    .topnav.responsive .icon {
        position: absolute;
        right: 0;
        top: 0;
    }
    .topnav.responsive a {
        float: none;
        display: block;
        text-align: left;
    }
    .topnav.responsive .dropdown {float: none;}
    .topnav.responsive .dropdown-content {position: relative;}
    .topnav.responsive .dropdown .dropbtn {
        display: block;
        width: 100%;
        text-align: left;
    }
}
@media screen and (max-width: 800px) {
    .topnav a:not(:first-child), .dropdown .dropbtn {
        display: none;
    }
    .topnav a.icon {
        float: right;
        display: block;
    }
}
@media screen and (max-width: 800px) {
    .topnav.responsive {position: relative;}
    .topnav.responsive .icon {
        position: absolute;
        right: 0;
        top: 0;
    }
    .topnav.responsive a {
        float: none;
        display: block;
        text-align: left;
    }
    .topnav.responsive .dropdown {float: none;}
    .topnav.responsive .dropdown-content {position: relative;}
    .topnav.responsive .dropdown .dropbtn {
        display: block;
        width: 100%;
        text-align: left;
    }
}
.button {
    border: 1px;
    border-color:transparent;
    border-radius: 5px;
    font-size: 1.5em;
    /*font-weight: bold;*/
    background-color: #009100;
    color:white;
    margin: 5px;
    cursor: pointer;
}
.message {
    margin-top: 5%;
    width: 30%;
    margin-right: auto;
    margin-left: auto;
    color: white;
    background: url("../images/schoolbord-2.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
    overflow: auto;
    padding: 5px;
    border: 5px solid #04aa6d;
    border-radius: 10px;
}
.message hr {
    color: white;
}
.content {
    background-color: transparent;
}
.btn {
    width:40%;
    background-color: #e8f0fe;
    color: black;
    font-size: 1em;
    padding: 7px 10px;
    margin: 8px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
.btn:hover {
        background-color: #d8dfec;
}
input[type=text], select {
    width: 80%;
    font-size: 1em;
    padding: 2px 2px;
    margin: 2px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
.text {
    width: 80%;
    padding: 2px 2px;
    margin: 2px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type=email] {
    width: 80%;
    font-size: 1em;
    padding: 2px 2px;
    margin: 2px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type=password] {
    width: 80%;
    font-size: 1em;
    padding: 2px 2px;
    margin: 2px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type=submit] {
    width: 60%;
    background-color: #e8f0fe;
    color: black;
    font-size: 1em;
    padding: 2px 2px;
    margin: 2px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
input[type=file] {
    width: 90%;
    background-color: #e8f0fe;
    color: black;
    font-size: 1em;
    padding: 2px 2px;
    margin: 2px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
input[type=submit]:hover {
    background-color: #d8dfec;
}
input[type=button] {
    width: 60%;
    background-color: #e8f0fe;
    color: black;
    font-size: 1em;
    padding: 2px 2px;
    margin: 2px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
.pop {
    border-radius: 5px;
    background-color: #f2f2f2;
    padding: 20px;
}

.tblcenter {
    width: 70%;
    margin-top: 10%;
    margin-left: auto;
    margin-right: auto;
    background-color: #04aa6d;
    color: white;
}
.tbl table, td {
  border: 1px solid #fff;
}
.tbl td {
  border-collapse: collapse;
}