How can I make the text-area wider with CSS?

I have created a simple contact form for my website. but i would like to have the comment section wider...

is there a way? iv gone through the entire css and am struggling to change just this single box's width without effecting the entire boxes

here is the css jotform provided

 @import "//www.jotform.com/themes/css/buttons/form-submit-button-light.css";

.form-all {

font-family: "Lucida Grande", sans-serif;

}

.form-all {

width: 650px;

width: 100%;

max-width: 650px;

}

.form-label-left,

.form-label-right {

width: 150px;

}

.form-label {

white-space: normal;

}

.form-label.form-label-auto {

display: inline-block;

float: left;

text-align: left;

width: 150px;

}

.form-label-left {

display: inline-block;

white-space: normal;

float: left;

text-align: left;

}

.form-label-right {

display: inline-block;

white-space: normal;

float: left;

text-align: right;

}

.form-label-top {

white-space: normal;

display: block;

float: none;

text-align: left;

}

.form-all {

font-size: 14px;

}

.form-label {

font-weight: bold;

}

.form-checkbox-item label,

.form-radio-item label {

font-weight: normal;

}

.supernova {

background-color: #0e0e0e;

background-color: rgba(14, 14, 14, 0);

}

.supernova body {

background-color: transparent;

}

/*

@width30: (unit(@formWidth, px) + 60px);

@width60: (unit(@formWidth, px)+ 120px);

@width90: (unit(@formWidth, px)+ 180px);

*/

/* | */

@media screen and (min-width: 480px) {

.supernova .form-all {

border: 1px solid rgba(0, 0, 0, 0);

-webkit-box-shadow: 0 3px 9px rgba(0, 0, 0, 0.1);

-moz-box-shadow: 0 3px 9px rgba(0, 0, 0, 0.1);

box-shadow: 0 3px 9px rgba(0, 0, 0, 0.1);

}

}

/* | */

/* | */

@media screen and (max-width: 480px) {

.jotform-form {

padding: 10px 0;

}

}

/* | */

/* | */

@media screen and (min-width: 480px) and (max-width: 768px) {

.jotform-form {

padding: 30px 0;

}

}

/* | */

/* | */

@media screen and (min-width: 480px) and (max-width: 650px) {

.jotform-form {

padding: 30px 0;

}

}

/* | */

/* | */

@media screen and (min-width: 768px) and (max-width: 1024px) {

.jotform-form {

padding: 60px 0;

}

}

/* | */

/* | */

@media screen and (max-width: 650px) {

.jotform-form {

padding: 0;

}

}

/* | */

.supernova .form-all,

.form-all {

background-color: #0e0e0e;

border: 1px solid transparent;

}

.form-header-group {

border-color: #000000;

}

.form-matrix-table tr {

border-color: #000000;

}

.form-matrix-table tr:nth-child(2n) {

background-color: #010101;

}

.form-all {

color: #ffffff;

}

.form-header-group .form-header {

color: #ffffff;

}

.form-header-group .form-subHeader {

color: #ffffff;

}

.form-sub-label {

color: #ffffff;

}

.form-label-top,

.form-label-left,

.form-label-right,

.form-html {

color: #ffffff;

}

.form-checkbox-item label,

.form-radio-item label {

color: #ffffff;

}

.form-line.form-line-active {

-webkit-transition-property: all;

-moz-transition-property: all;

-ms-transition-property: all;

-o-transition-property: all;

transition-property: all;

-webkit-transition-duration: 0.3s;

-moz-transition-duration: 0.3s;

-ms-transition-duration: 0.3s;

-o-transition-duration: 0.3s;

transition-duration: 0.3s;

-webkit-transition-timing-function: ease;

-moz-transition-timing-function: ease;

-ms-transition-timing-function: ease;

-o-transition-timing-function: ease;

transition-timing-function: ease;

background-color: #000000;

}

/* ömer */

.form-radio-item,

.form-checkbox-item {

padding-bottom: 0px !important;

}

.form-radio-item:last-child,

.form-checkbox-item:last-child {

padding-bottom: 0;

}

/* ömer */

[data-type="control_radio"] .form-input,

[data-type="control_checkbox"] .form-input,

[data-type="control_radio"] .form-input-wide,

[data-type="control_checkbox"] .form-input-wide {

width: 100%;

max-width: 290px;

}

.form-radio-item,

.form-checkbox-item {

width: 100%;

max-width: 290px;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.form-textbox.form-radio-other-input,

.form-textbox.form-checkbox-other-input {

width: 80%;

margin-left: 3%;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.form-multiple-column {

width: 100%;

}

.form-multiple-column .form-radio-item,

.form-multiple-column .form-checkbox-item {

width: 10%;

}

.form-multiple-column[data-columncount="1"] .form-radio-item,

.form-multiple-column[data-columncount="1"] .form-checkbox-item {

width: 100%;

}

.form-multiple-column[data-columncount="2"] .form-radio-item,

.form-multiple-column[data-columncount="2"] .form-checkbox-item {

width: 50%;

}

.form-multiple-column[data-columncount="3"] .form-radio-item,

.form-multiple-column[data-columncount="3"] .form-checkbox-item {

width: 33.33333333%;

}

.form-multiple-column[data-columncount="4"] .form-radio-item,

.form-multiple-column[data-columncount="4"] .form-checkbox-item {

width: 25%;

}

.form-multiple-column[data-columncount="5"] .form-radio-item,

.form-multiple-column[data-columncount="5"] .form-checkbox-item {

width: 20%;

}

.form-multiple-column[data-columncount="6"] .form-radio-item,

.form-multiple-column[data-columncount="6"] .form-checkbox-item {

width: 16.66666667%;

}

.form-multiple-column[data-columncount="7"] .form-radio-item,

.form-multiple-column[data-columncount="7"] .form-checkbox-item {

width: 14.28571429%;

}

.form-multiple-column[data-columncount="8"] .form-radio-item,

.form-multiple-column[data-columncount="8"] .form-checkbox-item {

width: 12.5%;

}

.form-multiple-column[data-columncount="9"] .form-radio-item,

.form-multiple-column[data-columncount="9"] .form-checkbox-item {

width: 11.11111111%;

}

.form-single-column .form-checkbox-item,

.form-single-column .form-radio-item {

width: 100%;

}

.supernova {

height: 100%;

background-repeat: no-repeat;

background-attachment: scroll;

background-position: center top;

background-repeat: repeat;

}

.supernova {

background-image: none;

}

#stage {

background-image: none;

}

/* | */

.form-all {

background-repeat: no-repeat;

background-attachment: scroll;

background-position: center top;

background-repeat: repeat;

}

.form-header-group {

background-repeat: no-repeat;

background-attachment: scroll;

background-position: center top;

}

.form-line {

margin-top: 0px;

margin-bottom: 0px;

}

.form-line {

padding: 0px 16px;

}

.form-all .form-textbox,

.form-all .form-radio-other-input,

.form-all .form-checkbox-other-input,

.form-all .form-captcha input,

.form-all .form-spinner input,

.form-all .form-pagebreak-back,

.form-all .form-pagebreak-next,

.form-all .qq-upload-button,

.form-all .form-error-message {

-webkit-border-radius: 0px;

-moz-border-radius: 0px;

border-radius: 0px;

}

.form-all .form-textarea {

-webkit-border-radius: 0px;

-moz-border-radius: 0px;

border-radius: 0px;

}

.form-all {

-webkit-border-radius: 6px;

-moz-border-radius: 6px;

border-radius: 6px;

}

.form-section:first-child {

-webkit-border-radius: 6px 6px 0 0;

-moz-border-radius: 6px 6px 0 0;

border-radius: 6px 6px 0 0;

}

.form-section:last-child {

-webkit-border-radius: 0 0 6px 6px;

-moz-border-radius: 0 0 6px 6px;

border-radius: 0 0 6px 6px;

}

.form-all .qq-upload-button,

.form-all .form-submit-button,

.form-all .form-submit-reset,

.form-all .form-submit-print {

font-size: 1em;

padding: 9px 15px;

font-family: "Lucida Grande", sans-serif;

font-size: 14px;

font-weight: bold;

}

.form-all .qq-upload-button,

.form-all .form-submit-button,

.form-all .form-submit-reset,

.form-all .form-submit-print {

color: #ffffff !important;

background: #000000;

box-shadow: none;

text-shadow: none;

}

.form-all .form-pagebreak-back,

.form-all .form-pagebreak-next {

font-size: 1em;

padding: 9px 15px;

font-family: "Lucida Grande", sans-serif;

font-size: 14px;

font-weight: normal;

}

/*

& when ( @buttonFontType = google ) {

@import (css) "@{buttonFontLink}";

}

*/

h2.form-header {

line-height: 1.618em;

font-size: 1.714em;

}

h2 ~ .form-subHeader {

line-height: 1.5em;

font-size: 1.071em;

}

.form-header-group {

text-align: left;

}

.form-line {

zoom: 1;

}

.form-line:before,

.form-line:after {

display: table;

content: '';

line-height: 0;

}

.form-line:after {

clear: both;

}

.form-sub-label-container {

margin-right: 0;

float: left;

white-space: nowrap;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.form-sub-label-container .date-separate {

visibility: hidden;

}

.form-captcha input,

.form-spinner input {

width: 290px;

}

.form-textbox,

.form-textarea {

width: 100%;

max-width: 500px;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.form-input,

.form-address-table,

.form-matrix-table {

width: 100%;

max-width: 290px;

}

.form-radio-item,

.form-checkbox-item {

width: 100%;

max-width: 290px;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.form-textbox.form-radio-other-input,

.form-textbox.form-checkbox-other-input {

width: 80%;

margin-left: 3%;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.form-multiple-column {

width: 100%;

}

.form-multiple-column .form-radio-item,

.form-multiple-column .form-checkbox-item {

width: 10%;

}

.form-multiple-column[data-columncount="1"] .form-radio-item,

.form-multiple-column[data-columncount="1"] .form-checkbox-item {

width: 100%;

}

.form-multiple-column[data-columncount="2"] .form-radio-item,

.form-multiple-column[data-columncount="2"] .form-checkbox-item {

width: 50%;

}

.form-multiple-column[data-columncount="3"] .form-radio-item,

.form-multiple-column[data-columncount="3"] .form-checkbox-item {

width: 33.33333333%;

}

.form-multiple-column[data-columncount="4"] .form-radio-item,

.form-multiple-column[data-columncount="4"] .form-checkbox-item {

width: 25%;

}

.form-multiple-column[data-columncount="5"] .form-radio-item,

.form-multiple-column[data-columncount="5"] .form-checkbox-item {

width: 20%;

}

.form-multiple-column[data-columncount="6"] .form-radio-item,

.form-multiple-column[data-columncount="6"] .form-checkbox-item {

width: 16.66666667%;

}

.form-multiple-column[data-columncount="7"] .form-radio-item,

.form-multiple-column[data-columncount="7"] .form-checkbox-item {

width: 14.28571429%;

}

.form-multiple-column[data-columncount="8"] .form-radio-item,

.form-multiple-column[data-columncount="8"] .form-checkbox-item {

width: 12.5%;

}

.form-multiple-column[data-columncount="9"] .form-radio-item,

.form-multiple-column[data-columncount="9"] .form-checkbox-item {

width: 11.11111111%;

}

[data-type="control_dropdown"] .form-dropdown {

width: 100% !important;

max-width: 290px;

}

[data-type="control_fullname"] .form-sub-label-container {

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

width: 48%;

}

[data-type="control_fullname"] .form-sub-label-container:first-child {

margin-right: 4%;

}

[data-type="control_phone"] .form-sub-label-container {

width: 65%;

}

[data-type="control_phone"] .form-sub-label-container:first-child {

width: 32.5%;

margin-right: 2.5%;

}

[data-type="control_birthdate"] .form-sub-label-container {

width: 22%;

margin-right: 3%;

}

[data-type="control_birthdate"] .form-sub-label-container:first-child {

width: 50%;

}

[data-type="control_birthdate"] .form-sub-label-container:last-child {

margin-right: 0;

}

[data-type="control_birthdate"] .form-sub-label-container .form-dropdown {

width: 100%;

}

[data-type="control_time"] .form-sub-label-container {

width: 37%;

margin-right: 3%;

}

[data-type="control_time"] .form-sub-label-container:last-child {

width: 20%;

margin-right: 0;

}

[data-type="control_time"] .form-sub-label-container .form-dropdown {

width: 100%;

}

[data-type="control_datetime"] .form-sub-label-container {

width: 28%;

margin-right: 4%;

}

[data-type="control_datetime"] .form-sub-label-container:last-child {

width: 4%;

margin-right: 0;

}

[data-type="control_datetime"].allowTime .form-sub-label-container {

width: 12%;

margin-right: 3%;

}

[data-type="control_datetime"].allowTime .form-sub-label-container:last-child {

width: 4%;

margin-right: 0;

}

[data-type="control_datetime"].allowTime .allowTime-container {

float: right;

width: 51%;

}

[data-type="control_datetime"].allowTime .allowTime-container .form-sub-label-container {

width: 27%;

margin-right: 4%;

}

[data-type="control_datetime"].allowTime .allowTime-container .form-sub-label-container:first-child {

width: 4%;

margin-left: 3%;

}

[data-type="control_datetime"].allowTime .allowTime-container .form-sub-label-container:last-child {

width: 27%;

margin-right: 0;

}

[data-type="control_datetime"].allowTime .form-dropdown {

width: 100%;

}

[data-type="control_payment"] .form-sub-label-container {

width: auto;

}

[data-type="control_payment"] .form-sub-label-container .form-dropdown {

width: 100%;

}

.form-address-table td .form-dropdown {

width: 100%;

}

.form-address-table td .form-sub-label-container {

width: 96%;

}

.form-address-table td:last-child .form-sub-label-container {

margin-left: 4%;

}

.form-address-table td[colspan="2"] .form-sub-label-container {

width: 100%;

margin: 0;

}

/*.form-dropdown,

.form-radio-item,

.form-checkbox-item,

.form-radio-other-input,

.form-checkbox-other-input,*/

.form-captcha input,

.form-spinner input,

.form-error-message {

padding: 4px 3px 2px 3px;

}

.form-header-group {

font-family: "Lucida Grande", sans-serif;

}

.form-section {

padding: 0px 0px 0px 0px;

}

.form-header-group {

margin: 12px 36px 12px 36px;

}

.form-header-group {

padding: 24px 0px 24px 0px;

}

.form-textbox,

.form-textarea {

border-width: 1px;

border-style: solid;

border-color: #ffffff;

color: #ffffff;

padding: 1px 0px -1px 0px;

}

.form-textbox,

.form-textarea,

.form-radio-other-input,

.form-checkbox-other-input,

.form-captcha input,

.form-spinner input {

background-color: #0e0e0e;

}

.form-textbox,

.form-textarea {

width: 100%;

max-width: 290px;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

[data-type="control_textbox"] .form-input,

[data-type="control_textarea"] .form-input,

[data-type="control_fullname"] .form-input,

[data-type="control_phone"] .form-input,

[data-type="control_datetime"] .form-input,

[data-type="control_address"] .form-input,

[data-type="control_email"] .form-input,

[data-type="control_passwordbox"] .form-input,

[data-type="control_autocomp"] .form-input,

[data-type="control_textbox"] .form-input-wide,

[data-type="control_textarea"] .form-input-wide,

[data-type="control_fullname"] .form-input-wide,

[data-type="control_phone"] .form-input-wide,

[data-type="control_datetime"] .form-input-wide,

[data-type="control_address"] .form-input-wide,

[data-type="control_email"] .form-input-wide,

[data-type="control_passwordbox"] .form-input-wide,

[data-type="control_autocomp"] .form-input-wide {

width: 100%;

max-width: 290px;

}

[data-type="control_fullname"] .form-sub-label-container {

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

width: 48%;

}

[data-type="control_fullname"] .form-sub-label-container:first-child {

margin-right: 4%;

}

[data-type="control_phone"] .form-sub-label-container {

width: 65%;

}

[data-type="control_phone"] .form-sub-label-container:first-child {

width: 32.5%;

margin-right: 2.5%;

}

[data-type="control_phone"] .form-sub-label-container .date-separate {

visibility: hidden;

}

[data-type="control_datetime"] .form-sub-label-container {

width: 28%;

margin-right: 4%;

}

[data-type="control_datetime"] .form-sub-label-container:last-child {

width: 4%;

margin-right: 0;

}

[data-type="control_datetime"] .form-sub-label-container .date-separate {

visibility: hidden;

}

[data-type="control_datetime"].allowTime .form-sub-label-container {

width: 12%;

margin-right: 3%;

}

[data-type="control_datetime"].allowTime .form-sub-label-container:last-child {

width: 4%;

margin-right: 0;

}

[data-type="control_datetime"].allowTime .allowTime-container {

float: right;

width: 51%;

}

[data-type="control_datetime"].allowTime .allowTime-container .form-sub-label-container {

width: 27%;

margin-right: 4%;

}

[data-type="control_datetime"].allowTime .allowTime-container .form-sub-label-container:first-child {

width: 4%;

margin-left: 3%;

}

[data-type="control_datetime"].allowTime .allowTime-container .form-sub-label-container:last-child {

width: 27%;

margin-right: 0;

}

[data-type="control_datetime"].allowTime .form-dropdown {

width: 100%;

}

.form-matrix-table {

width: 100%;

max-width: 290px;

}

.form-address-table {

width: 100%;

max-width: 290px;

}

.form-address-table td .form-dropdown {

width: 100%;

}

.form-address-table td .form-sub-label-container {

width: 96%;

}

.form-address-table td:last-child .form-sub-label-container {

margin-left: 4%;

}

.form-address-table td[colspan="2"] .form-sub-label-container {

width: 100%;

margin: 0;

}

[data-type="control_dropdown"] .form-input,

[data-type="control_birthdate"] .form-input,

[data-type="control_time"] .form-input,

[data-type="control_dropdown"] .form-input-wide,

[data-type="control_birthdate"] .form-input-wide,

[data-type="control_time"] .form-input-wide {

width: 100%;

max-width: 290px;

}

[data-type="control_dropdown"] .form-dropdown {

width: 100% !important;

max-width: 290px;

}

[data-type="control_birthdate"] .form-sub-label-container {

width: 22%;

margin-right: 3%;

}

[data-type="control_birthdate"] .form-sub-label-container:first-child {

width: 50%;

}

[data-type="control_birthdate"] .form-sub-label-container:last-child {

margin-right: 0;

}

[data-type="control_birthdate"] .form-sub-label-container .form-dropdown {

width: 100%;

}

[data-type="control_time"] .form-sub-label-container {

width: 37%;

margin-right: 3%;

}

[data-type="control_time"] .form-sub-label-container:last-child {

width: 20%;

margin-right: 0;

}

[data-type="control_time"] .form-sub-label-container .form-dropdown {

width: 100%;

}

.form-buttons-wrapper {

margin-left: 0 !important;

text-align: left !important;

}

.form-label {

font-family: "Lucida Grande", sans-serif;

}

li[data-type="control_image"] div {

text-align: left;

}

li[data-type="control_image"] img {

border: none;

border-width: 0px !important;

border-style: solid !important;

border-color: false !important;

}

.form-line-column {

width: auto;

}

.form-line-error {

overflow: hidden;

-webkit-transition-property: none;

-moz-transition-property: none;

-ms-transition-property: none;

-o-transition-property: none;

transition-property: none;

-webkit-transition-duration: 0.3s;

-moz-transition-duration: 0.3s;

-ms-transition-duration: 0.3s;

-o-transition-duration: 0.3s;

transition-duration: 0.3s;

-webkit-transition-timing-function: ease;

-moz-transition-timing-function: ease;

-ms-transition-timing-function: ease;

-o-transition-timing-function: ease;

transition-timing-function: ease;

background-color: #fff4f4;

}

.form-line-error .form-error-message {

background-color: #ff3200;

clear: both;

float: none;

}

.form-line-error .form-error-message .form-error-arrow {

border-bottom-color: #ff3200;

}

.form-line-error input:not(#coupon-input),

.form-line-error textarea,

.form-line-error .form-validation-error {

border: 1px solid #ff3200;

-webkit-box-shadow: 0 0 3px #ff3200;

-moz-box-shadow: 0 0 3px #ff3200;

box-shadow: 0 0 3px #ff3200;

}

.ie-8 .form-all {

margin-top: auto;

margin-top: initial;

}

.ie-8 .form-all:before {

display: none;

}

/* | */

@media screen and (max-width: 480px), screen and (max-device-width: 768px) and (orientation: portrait), screen and (max-device-width: 415px) and (orientation: landscape) {

.jotform-form {

padding: 0;

}

.form-all {

border: 0;

width: 100%;

max-width: initial;

}

.form-sub-label-container {

width: 100%;

margin: 0;

}

.form-input {

width: 100%;

}

.form-label {

width: 100%!important;

}

.form-line {

padding: 2% 5%;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

input[type=text],

input[type=email],

input[type=tel],

textarea {

width: 100%;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

max-width: initial !important;

}

.form-input,

.form-input-wide,

.form-textarea,

.form-textbox,

.form-dropdown {

max-width: initial !important;

}

div.form-header-group {

padding: 24px 0px !important;

margin: 0 12px 2% !important;

margin-left: 5% !important;

margin-right: 5% !important;

-moz-box-sizing: border-box;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

[data-type="control_button"] {

margin-bottom: 0 !important;

}

.form-buttons-wrapper {

margin: 0!important;

}

.form-buttons-wrapper button {

width: 100%;

}

table {

width: 100%!important;

max-width: initial !important;

}

table td + td {

padding-left: 3%;

}

.form-checkbox-item input,

.form-radio-item input {

width: auto;

}

.form-collapse-table {

margin: 0 5%;

}

}

/* | *//*__INSPECT_SEPERATOR__*/

.form-textarea {}.form-textbox {}.form-line.form-line-column.form-col-2 {}.form-line {}.form-buttons-wrapper {}#input_10 {}.jotform-form {}.form-section.page-section {}

There were some CSS conflicts that were preventing the re-size of the text-area. Feel free to test and clone the demo form:

https://form.jotform.com/53513700778962? 

Let us know if we can assist you further.   

you are a life safe thank you so much!

id say the only issue is when adapting to mobile.
the comment section doesnt conform to the new width

I have added the following CSS to your 'TDC Contact' form.

It should work for desktop and mobile. Thank you.