.frm_form_field {
    height: 48px;
    line-height: 30px;
    font-family: 'Fira Sans';
    font-size: 20px;
    border-radius: 13px;
    padding: 10px !important;
}
.half {
    width: 49%;
}
.quarter {
    width: 23%;
}

@media only screen and (max-width: 500px) {
    .frm_form_field {
        margin-top: 5px !important;
        margin-bottom: 5px !important;
    }
    .half {
        width: 100%;
    }
    .quarter {
        width: 100% ;
    }
    
    iframe {
	    height: 800px !important;
	    padding-top: 120px;
    }
}

#btnOpenform,
#btnBackbutton {
    color: #fff;
    background-color: #66cc00 !important;
    border-color: #66cc00 !important;
    height: 48px;
    font-family: 'Fira Sans';
    font-size: 20px;
    box-shadow: 0 0 black;
    border: 1px solid;
    border-radius: 13px;
    margin-top: 10px;
    padding: 10px;
}

#btnBackbutton {
    background-color: transparent !important;
    border-color: #fff !important;
    margin-bottom: 10px;
    font-size: 14px;
}

div.onderwerpbuttons {
    margin-bottom: 15px;
    width: 100%;

}

div.onderwerpimages {
    width: 150px;
    height: 150px;
    min-width: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    -moz-box-pack: center;
    justify-content: center;
    -moz-box-align: center;
    align-items: center;
    overflow: hidden;
    white-space: nowrap;

}
button.onderwerp {
    color: #fff;
    background-color: transparent;
    border-color: #fff !important;
    height: 48px;
    width: 150px;
    font-family: 'Fira Sans';
    font-size: 20px;
    box-shadow: 0 0 black;
    border: 1px solid;
    border-radius: 13px;
    margin-top: 10px;
    margin-right: 5px;
    padding: 12px;
    height: 270px;
    width: 195px;
    cursor: pointer;
    opacity: 1;
}

button.onderwerp div.text {
    padding-top: 15px;
    font-size: 25px;
    line-height: 1.5em;
}

div.inputs {
    clear: both;
}

@media only screen and (max-width: 600px) {
    #preview {
        display: none;
    }
}


@media only screen and (min-width: 601px) {
    #preview-mobile {
        display: none;
    }
}