```css
/* Visforms: größere Darstellung, blaue Buttons und mobil optimiert */

.mein-mobile-formular {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

/* Abstände zwischen den Feldern */
.mein-mobile-formular .control-group,
.mein-mobile-formular .form-group,
.mein-mobile-formular .field {
    margin-bottom: 20px;
}

/* Beschriftungen */
.mein-mobile-formular label {
    display: block;
    margin-bottom: 8px;
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
}

/* Eingabefelder */
.mein-mobile-formular input[type="text"],
.mein-mobile-formular input[type="email"],
.mein-mobile-formular input[type="tel"],
.mein-mobile-formular input[type="number"],
.mein-mobile-formular input[type="date"],
.mein-mobile-formular input[type="time"],
.mein-mobile-formular input[type="url"],
.mein-mobile-formular input[type="password"],
.mein-mobile-formular select,
.mein-mobile-formular textarea {
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    min-height: 50px;
    padding: 12px 14px;
    border: 1px solid #b8c2cc;
    border-radius: 8px;
    background: #ffffff;
    color: #222222;
    font-family: inherit;
    font-size: 17px;
    line-height: 1.4;
}

/* Mehrzeilige Textfelder */
.mein-mobile-formular textarea {
    min-height: 160px;
    resize: vertical;
}

/* Fokus auf Feldern */
.mein-mobile-formular input:focus,
.mein-mobile-formular select:focus,
.mein-mobile-formular textarea:focus {
    border-color: #0d6efd;
    outline: none;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.18);
}

/* Checkboxen und Radiobuttons */
.mein-mobile-formular input[type="checkbox"],
.mein-mobile-formular input[type="radio"] {
    width: 22px;
    height: 22px;
    margin-right: 8px;
    vertical-align: middle;
}

/* Buttons */
.mein-mobile-formular button,
.mein-mobile-formular input[type="submit"],
.mein-mobile-formular input[type="button"],
.mein-mobile-formular input[type="reset"] {
    min-height: 50px;
    padding: 12px 22px;
    border: 1px solid #0d6efd;
    border-radius: 8px;
    background: #0d6efd;
    color: #ffffff;
    font-family: inherit;
    font-size: 17px;
    font-weight: 600;
    line-height: 1.3;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

/* Buttons beim Darüberfahren */
.mein-mobile-formular button:hover,
.mein-mobile-formular input[type="submit"]:hover,
.mein-mobile-formular input[type="button"]:hover,
.mein-mobile-formular input[type="reset"]:hover {
    border-color: #0b5ed7;
    background: #0b5ed7;
}

/* Hinweise und Beschreibungen */
.mein-mobile-formular .help-block,
.mein-mobile-formular .field-description,
.mein-mobile-formular small {
    font-size: 15px;
    line-height: 1.5;
}

/* Fehlermeldungen */
.mein-mobile-formular .error,
.mein-mobile-formular .invalid,
.mein-mobile-formular .validation-error {
    color: #b42318;
    font-size: 15px;
}

/* Fehlerhafte Felder */
.mein-mobile-formular input.invalid,
.mein-mobile-formular select.invalid,
.mein-mobile-formular textarea.invalid {
    border-color: #b42318;
}

/* Mobile Darstellung */
@media (max-width: 767px) {

    .mein-mobile-formular {
        width: 100%;
        padding: 0 4px;
    }

    .mein-mobile-formular label {
        margin-bottom: 9px;
        font-size: 19px !important;
    }

    .mein-mobile-formular input[type="text"],
    .mein-mobile-formular input[type="email"],
    .mein-mobile-formular input[type="tel"],
    .mein-mobile-formular input[type="number"],
    .mein-mobile-formular input[type="date"],
    .mein-mobile-formular input[type="time"],
    .mein-mobile-formular input[type="url"],
    .mein-mobile-formular input[type="password"],
    .mein-mobile-formular select,
    .mein-mobile-formular textarea {
        width: 100%;
        max-width: 100%;
        min-height: 56px;
        padding: 14px 15px;
        font-size: 18px !important;
    }

    .mein-mobile-formular textarea {
        min-height: 180px;
    }

    .mein-mobile-formular input[type="checkbox"],
    .mein-mobile-formular input[type="radio"] {
        width: 26px;
        height: 26px;
        margin-right: 10px;
    }

    .mein-mobile-formular button,
    .mein-mobile-formular input[type="submit"],
    .mein-mobile-formular input[type="button"],
    .mein-mobile-formular input[type="reset"] {
        display: block;
        width: 100%;
        min-height: 58px;
        margin-top: 10px;
        padding: 15px 18px;
        font-size: 19px !important;
    }

    .mein-mobile-formular .control-group,
    .mein-mobile-formular .form-group,
    .mein-mobile-formular .field {
        margin-bottom: 26px;
    }
}
```