:root {
  --central_form_width: 500px;
  --offset: 100px;
}

div.form.box {
    background-color: white;
    color: black;
    border-radius: 25px;
    font-size: 19px;
    padding: 50px 50px 0px 50px;
}

div.form.box.central {
    width: var(--central_form_width);
    position: fixed;
    top: 20%;
    left: calc( (100% - var(--central_form_width) - var(--offset)) / 2 );
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
div.form.box.central form {
    width: 100%;
    height: 100%;
}

div.form.box span.title {
    font-size: 15px;
    font-weight: bold;
}

input,
select {
    font-size: 19px;
}

input[type=text] {
    display: block;
    vertical-align: top;
    margin: 0px;
    padding: 5px;
    /*border-radius: 5px;*/
    border: none;
    border: 3px solid #D1D1D1;
    -webkit-transition: 0.5s;
    transition: 0.5s;
}
input[type=text]:focus{
    outline: none;
    border: 3px solid black;
}

input[type=button],
input[type=submit] {
    display: inline-block;
    background-color: transparent;
    border: none;
    color: inherit;
    padding: 16px 32px;
    text-decoration: none;
    font-size: inherit;
}
input[type=button].center,
input[type=submit].center {
    width: 100%;
    text-align: center;
}
input[type=button]:hover,
input[type=submit]:hover {
    cursor: pointer;
    font-weight: bold;
}

span.error {
    display: block;
    width: 100%;
    text-align: center;
    font-size: inherit;
    color: red;
}