diff --git a/web/modals/threads/thread-settings-modal.css b/web/modals/threads/thread-settings-modal.css
index 496c934c9..2cb69a725 100644
--- a/web/modals/threads/thread-settings-modal.css
+++ b/web/modals/threads/thread-settings-modal.css
@@ -1,141 +1,140 @@
 div.modal_body {
-  padding: 6px 6px;
-  width: 100%;
-  box-sizing: border-box;
+  padding: 20px;
   background-color: var(--modal-bg);
-  border-bottom-left-radius: 15px;
-  border-bottom-right-radius: 15px;
+  border-radius: 16px;
   flex: 1;
   display: flex;
   flex-direction: column;
 }
 div.modal_body p {
   padding: 1px 3px 4px 3px;
   font-size: 14px;
   text-align: center;
 }
-div.modal_body textarea {
-  margin: 3px;
-}
-div.modal_body textarea {
-  font-size: 14px;
-  padding: 1px;
-  width: 175px;
-}
 div.modal_body p.confirm_account_password {
   margin-bottom: 4px;
   color: var(--fg);
 }
 div.modal_body div.form_footer {
   display: flex;
-  flex-direction: row-reverse;
-  justify-content: space-between;
   padding-top: 8px;
 }
 div.modal_body div.form_footer div.modal_form_error {
   font-size: 12px;
   color: red;
   font-style: italic;
   padding-left: 6px;
   align-self: center;
 }
 div.modal_body div.form_title {
-  display: inline-block;
-  text-align: right;
-  padding-right: 5px;
-  padding-top: 5px;
+  padding: 6px 6px 0 0;
   font-size: 14px;
   font-weight: 600;
   vertical-align: top;
-  width: 110px;
   color: var(--fg);
 }
 div.modal_body div.form_content {
-  display: inline-block;
+  display: flex;
   font-family: var(--font-stack);
   color: var(--fg);
+  margin-top: 4px;
+  margin-bottom: 8px;
 }
 div.modal_body div.form_content input {
   margin-bottom: 4px;
 }
 
+div.form_content textarea {
+  padding: 12px;
+  background: var(--modal-bg);
+  color: var(--fg);
+  border: 1px solid var(--border-color);
+  font-size: var(--m-font-16);
+  border-radius: 4px;
+  width: 100%;
+}
+
 .italic {
   font-style: italic;
   color: var(--fg);
 }
 
 ul.tab_panel {
   background-color: var(--modal-bg);
   padding-left: 10px;
   padding-top: 5px;
 }
 ul.tab_panel > li {
   display: inline-block;
   list-style-type: none;
   font-size: 13px;
   font-weight: 600;
   cursor: pointer;
   padding: 3px 10px 3px 10px;
 }
 ul.tab_panel > li > a {
   color: #555555;
 }
 
 div.form_textarea_container {
   margin-top: 1px;
 }
 
 div.edit_thread_color_container {
   margin-top: -5px;
 }
 
 div.color_title {
   margin-top: 4px;
 }
 
 div.edit_thread_privacy_container {
   margin-bottom: 6px;
 }
 
 div.form_enum_selector {
   display: inline-block;
   padding-bottom: 4px;
 }
 div.form_enum_selector > div.form_enum_container {
   padding-top: 5px;
 }
 div.form_enum_selector > div.form_enum_container > input {
   vertical-align: top;
   margin-top: 4px;
 }
 div.form_enum_selector div.form_enum_option {
   display: inline-block;
   font-size: 15px;
   font-weight: 600;
   padding-left: 3px;
 }
 div.form_enum_selector span.form_enum_description {
   display: block;
   font-family: var(--font-stack);
   font-weight: normal;
   font-size: 13px;
   max-width: 260px;
   color: gray;
 }
 
 div.form_enum_selector > div.form_enum_container {
   padding-top: 5px;
 }
 div.form_enum_selector > div.form_enum_container > input {
   vertical-align: top;
   margin-top: 4px;
 }
 .italic {
   font-style: italic;
 }
 
 div.edit_thread_account_password {
   border-top: 2px solid #efefef;
   padding-top: 4px;
   margin-top: 2px;
 }
+
+.save_button {
+  width: 100%;
+}
diff --git a/web/modals/threads/thread-settings-modal.react.js b/web/modals/threads/thread-settings-modal.react.js
index 75812c8b8..cec6b844a 100644
--- a/web/modals/threads/thread-settings-modal.react.js
+++ b/web/modals/threads/thread-settings-modal.react.js
@@ -1,597 +1,599 @@
 // @flow
 
 import classNames from 'classnames';
 import invariant from 'invariant';
 import _pickBy from 'lodash/fp/pickBy';
 import * as React from 'react';
 
 import {
   deleteThreadActionTypes,
   deleteThread,
   changeThreadSettingsActionTypes,
   changeThreadSettings,
 } from 'lib/actions/thread-actions';
 import { createLoadingStatusSelector } from 'lib/selectors/loading-selectors';
 import { threadInfoSelector } from 'lib/selectors/thread-selectors';
 import {
   threadHasPermission,
   threadTypeDescriptions,
   robotextName,
 } from 'lib/shared/thread-utils';
 import {
   type ThreadInfo,
   threadTypes,
   assertThreadType,
   type ChangeThreadSettingsPayload,
   type UpdateThreadRequest,
   type LeaveThreadPayload,
   threadPermissions,
   type ThreadChanges,
 } from 'lib/types/thread-types';
 import type { UserInfos } from 'lib/types/user-types';
 import {
   useDispatchActionPromise,
   useServerCall,
   type DispatchActionPromise,
 } from 'lib/utils/action-utils';
 import { firstLine } from 'lib/utils/string-utils';
 
 import Button from '../../components/button.react';
 import { useModalContext } from '../../modals/modal-provider.react';
 import { useSelector } from '../../redux/redux-utils';
+import Input from '../input.react';
 import Modal from '../modal.react';
 import ColorPicker from './color-picker.react';
 import css from './thread-settings-modal.css';
 
 const { COMMUNITY_OPEN_SUBTHREAD, COMMUNITY_SECRET_SUBTHREAD } = threadTypes;
 
 type TabType = 'general' | 'privacy' | 'delete';
 type TabProps = {
   +name: string,
   +tabType: TabType,
   +selected: boolean,
   +onClick: (tabType: TabType) => void,
 };
 class Tab extends React.PureComponent<TabProps> {
   render() {
     const classNamesForTab = classNames({
       [css['current-tab']]: this.props.selected,
       [css['delete-tab']]:
         this.props.selected && this.props.tabType === 'delete',
     });
     return (
       <li className={classNamesForTab} onClick={this.onClick}>
         <a>{this.props.name}</a>
       </li>
     );
   }
 
   onClick = () => {
     return this.props.onClick(this.props.tabType);
   };
 }
 
 type BaseProps = {
   +threadID: string,
 };
 type Props = {
   ...BaseProps,
   +threadInfo: ThreadInfo,
   +changeInProgress: boolean,
   +viewerID: ?string,
   +userInfos: UserInfos,
   +dispatchActionPromise: DispatchActionPromise,
   +deleteThread: (
     threadID: string,
     currentAccountPassword: string,
   ) => Promise<LeaveThreadPayload>,
   +changeThreadSettings: (
     update: UpdateThreadRequest,
   ) => Promise<ChangeThreadSettingsPayload>,
   +onClose: () => void,
 };
 type State = {
   +queuedChanges: ThreadChanges,
   +errorMessage: string,
   +accountPassword: string,
   +currentTabType: TabType,
 };
 class ThreadSettingsModal extends React.PureComponent<Props, State> {
   nameInput: ?HTMLInputElement;
   newThreadPasswordInput: ?HTMLInputElement;
   accountPasswordInput: ?HTMLInputElement;
 
   constructor(props: Props) {
     super(props);
     this.state = {
       queuedChanges: Object.freeze({}),
       errorMessage: '',
       accountPassword: '',
       currentTabType: 'general',
     };
   }
 
   componentDidMount() {
     invariant(this.nameInput, 'nameInput ref unset');
     this.nameInput.focus();
   }
 
   componentDidUpdate(prevProps: Props) {
     if (this.state.currentTabType !== 'delete') {
       return;
     }
 
     const permissionForDeleteTab = this.hasPermissionForTab(
       this.props.threadInfo,
       'delete',
     );
     const prevPermissionForDeleteTab = this.hasPermissionForTab(
       prevProps.threadInfo,
       'delete',
     );
 
     if (!permissionForDeleteTab && prevPermissionForDeleteTab) {
       this.setTab('general');
     }
   }
 
   hasPermissionForTab(threadInfo: ThreadInfo, tab: TabType) {
     if (tab === 'general') {
       return threadHasPermission(
         threadInfo,
         threadPermissions.EDIT_THREAD_NAME,
       );
     } else if (tab === 'privacy') {
       return threadHasPermission(
         threadInfo,
         threadPermissions.EDIT_PERMISSIONS,
       );
     } else if (tab === 'delete') {
       return threadHasPermission(threadInfo, threadPermissions.DELETE_THREAD);
     }
     invariant(false, `invalid tab ${tab}`);
   }
 
   possiblyChangedValue(key: string) {
     const valueChanged =
       this.state.queuedChanges[key] !== null &&
       this.state.queuedChanges[key] !== undefined;
     return valueChanged
       ? this.state.queuedChanges[key]
       : this.props.threadInfo[key];
   }
 
   namePlaceholder() {
     return robotextName(
       this.props.threadInfo,
       this.props.viewerID,
       this.props.userInfos,
     );
   }
 
   changeQueued() {
     return (
       Object.keys(
         _pickBy(
           value => value !== null && value !== undefined,
           // the lodash/fp libdef coerces the returned object's properties to the
           // same type, which means it only works for object-as-maps $FlowFixMe
         )(this.state.queuedChanges),
       ).length > 0
     );
   }
 
   render() {
     const { threadInfo } = this.props;
     const inputDisabled =
       this.props.changeInProgress ||
       !this.hasPermissionForTab(threadInfo, this.state.currentTabType);
 
     let mainContent = null;
     if (this.state.currentTabType === 'general') {
       mainContent = (
         <div>
           <div>
             <div className={css.form_title}>Thread name</div>
             <div className={css.form_content}>
-              <input
+              <Input
                 type="text"
                 value={firstLine(this.possiblyChangedValue('name'))}
                 placeholder={this.namePlaceholder()}
                 onChange={this.onChangeName}
                 disabled={inputDisabled}
                 ref={this.nameInputRef}
               />
             </div>
           </div>
           <div className={css.form_textarea_container}>
             <div className={css.form_title}>Description</div>
             <div className={css.form_content}>
               <textarea
                 value={this.possiblyChangedValue('description')}
                 placeholder="Thread description"
                 onChange={this.onChangeDescription}
                 disabled={inputDisabled}
-              ></textarea>
+              />
             </div>
           </div>
           <div className={css.edit_thread_color_container}>
             <div className={`${css.form_title} ${css.color_title}`}>Color</div>
             <div className={css.form_content}>
               <ColorPicker
                 id="edit-thread-color"
                 value={this.possiblyChangedValue('color')}
                 disabled={inputDisabled}
                 onChange={this.onChangeColor}
               />
             </div>
           </div>
         </div>
       );
     } else if (this.state.currentTabType === 'privacy') {
       mainContent = (
         <div className={css.edit_thread_privacy_container}>
           <div className={css['modal-radio-selector']}>
             <div className={css.form_title}>Thread type</div>
             <div className={css.form_enum_selector}>
               <div className={css.form_enum_container}>
                 <input
                   type="radio"
                   name="edit-thread-type"
                   id="edit-thread-open"
                   value={COMMUNITY_OPEN_SUBTHREAD}
                   checked={
                     this.possiblyChangedValue('type') ===
                     COMMUNITY_OPEN_SUBTHREAD
                   }
                   onChange={this.onChangeThreadType}
                   disabled={inputDisabled}
                 />
                 <div className={css.form_enum_option}>
                   <label htmlFor="edit-thread-open">
                     Open
                     <span className={css.form_enum_description}>
                       {threadTypeDescriptions[COMMUNITY_OPEN_SUBTHREAD]}
                     </span>
                   </label>
                 </div>
               </div>
               <div className={css.form_enum_container}>
                 <input
                   type="radio"
                   name="edit-thread-type"
                   id="edit-thread-closed"
                   value={COMMUNITY_SECRET_SUBTHREAD}
                   checked={
                     this.possiblyChangedValue('type') ===
                     COMMUNITY_SECRET_SUBTHREAD
                   }
                   onChange={this.onChangeThreadType}
                   disabled={inputDisabled}
                 />
                 <div className={css.form_enum_option}>
                   <label htmlFor="edit-thread-closed">
                     Secret
                     <span className={css.form_enum_description}>
                       {threadTypeDescriptions[COMMUNITY_SECRET_SUBTHREAD]}
                     </span>
                   </label>
                 </div>
               </div>
             </div>
           </div>
         </div>
       );
     } else if (this.state.currentTabType === 'delete') {
       mainContent = (
         <>
           <div>
             <p className={css.italic}>
               Your thread will be permanently deleted. There is no way to
               reverse this.
             </p>
           </div>
           <div className={css.edit_thread_account_password}>
             <p className={css.confirm_account_password}>
               Please enter your account password to confirm your identity
             </p>
             <div className={css.form_title}>Account password</div>
             <div className={css.form_content}>
               <input
                 type="password"
                 placeholder="Personal account password"
                 value={this.state.accountPassword}
                 onChange={this.onChangeAccountPassword}
                 disabled={inputDisabled}
                 ref={this.accountPasswordInputRef}
               />
             </div>
           </div>
         </>
       );
     }
 
     let buttons = null;
     if (this.state.currentTabType === 'delete') {
       buttons = (
         <Button
           onClick={this.onDelete}
           variant="danger"
           disabled={inputDisabled}
         >
           Delete
         </Button>
       );
     } else {
       buttons = (
         <Button
           type="submit"
           onClick={this.onSubmit}
           disabled={inputDisabled || !this.changeQueued()}
+          className={css.save_button}
         >
           Save
         </Button>
       );
     }
 
     const tabs = [
       <Tab
         name="General"
         tabType="general"
         onClick={this.setTab}
         selected={this.state.currentTabType === 'general'}
         key="general"
       />,
     ];
 
     // This UI needs to be updated to handle sidebars but we haven't gotten
     // there yet. We'll probably end up ripping it out anyways, so for now we
     // are just hiding the privacy tab for any thread that was created as a
     // sidebar
     const canSeePrivacyTab =
       this.possiblyChangedValue('parentThreadID') &&
       threadInfo.sourceMessageID &&
       (threadInfo.type === threadTypes.COMMUNITY_OPEN_SUBTHREAD ||
         threadInfo.type === threadTypes.COMMUNITY_SECRET_SUBTHREAD);
 
     if (canSeePrivacyTab) {
       tabs.push(
         <Tab
           name="Privacy"
           tabType="privacy"
           onClick={this.setTab}
           selected={this.state.currentTabType === 'privacy'}
           key="privacy"
         />,
       );
     }
     const canDeleteThread = this.hasPermissionForTab(threadInfo, 'delete');
     if (canDeleteThread) {
       tabs.push(
         <Tab
           name="Delete"
           tabType="delete"
           onClick={this.setTab}
           selected={this.state.currentTabType === 'delete'}
           key="delete"
         />,
       );
     }
 
     return (
-      <Modal name="Thread settings" onClose={this.props.onClose} size="large">
+      <Modal name="Thread settings" onClose={this.props.onClose}>
         <ul className={css.tab_panel}>{tabs}</ul>
         <div className={css.modal_body}>
           <form method="POST">
             {mainContent}
             <div className={css.form_footer}>
               {buttons}
               <div className={css.modal_form_error}>
                 {this.state.errorMessage}
               </div>
             </div>
           </form>
         </div>
       </Modal>
     );
   }
 
   setTab = (tabType: TabType) => {
     this.setState({ currentTabType: tabType });
   };
 
   nameInputRef = (nameInput: ?HTMLInputElement) => {
     this.nameInput = nameInput;
   };
 
   newThreadPasswordInputRef = (newThreadPasswordInput: ?HTMLInputElement) => {
     this.newThreadPasswordInput = newThreadPasswordInput;
   };
 
   accountPasswordInputRef = (accountPasswordInput: ?HTMLInputElement) => {
     this.accountPasswordInput = accountPasswordInput;
   };
 
   onChangeName = (event: SyntheticEvent<HTMLInputElement>) => {
     const target = event.currentTarget;
     const newValue =
       target.value !== this.props.threadInfo.name ? target.value : undefined;
     this.setState((prevState: State) => ({
       ...prevState,
       queuedChanges: {
         ...prevState.queuedChanges,
         name: firstLine(newValue),
       },
     }));
   };
 
   onChangeDescription = (event: SyntheticEvent<HTMLTextAreaElement>) => {
     const target = event.currentTarget;
     const newValue =
       target.value !== this.props.threadInfo.description
         ? target.value
         : undefined;
     this.setState((prevState: State) => ({
       ...prevState,
       queuedChanges: {
         ...prevState.queuedChanges,
         description: newValue,
       },
     }));
   };
 
   onChangeColor = (color: string) => {
     const newValue = color !== this.props.threadInfo.color ? color : undefined;
     this.setState((prevState: State) => ({
       ...prevState,
       queuedChanges: {
         ...prevState.queuedChanges,
         color: newValue,
       },
     }));
   };
 
   onChangeThreadType = (event: SyntheticEvent<HTMLInputElement>) => {
     const uiValue = assertThreadType(parseInt(event.currentTarget.value, 10));
     const newValue =
       uiValue !== this.props.threadInfo.type ? uiValue : undefined;
     this.setState((prevState: State) => ({
       ...prevState,
       queuedChanges: {
         ...prevState.queuedChanges,
         type: newValue,
       },
     }));
   };
 
   onChangeAccountPassword = (event: SyntheticEvent<HTMLInputElement>) => {
     const target = event.currentTarget;
     this.setState({ accountPassword: target.value });
   };
 
   onSubmit = (event: SyntheticEvent<HTMLElement>) => {
     event.preventDefault();
     this.props.dispatchActionPromise(
       changeThreadSettingsActionTypes,
       this.changeThreadSettingsAction(),
     );
   };
 
   async changeThreadSettingsAction() {
     try {
       const response = await this.props.changeThreadSettings({
         threadID: this.props.threadInfo.id,
         changes: this.state.queuedChanges,
       });
       this.props.onClose();
       return response;
     } catch (e) {
       this.setState(
         prevState => ({
           ...prevState,
           queuedChanges: Object.freeze({}),
           accountPassword: '',
           errorMessage: 'unknown error',
           currentTabType: 'general',
         }),
         () => {
           invariant(this.nameInput, 'nameInput ref unset');
           this.nameInput.focus();
         },
       );
       throw e;
     }
   }
 
   onDelete = (event: SyntheticEvent<HTMLElement>) => {
     event.preventDefault();
     this.props.dispatchActionPromise(
       deleteThreadActionTypes,
       this.deleteThreadAction(),
     );
   };
 
   async deleteThreadAction() {
     try {
       const response = await this.props.deleteThread(
         this.props.threadInfo.id,
         this.state.accountPassword,
       );
       this.props.onClose();
       return response;
     } catch (e) {
       const errorMessage =
         e.message === 'invalid_credentials'
           ? 'wrong password'
           : 'unknown error';
       this.setState(
         {
           accountPassword: '',
           errorMessage: errorMessage,
         },
         () => {
           invariant(
             this.accountPasswordInput,
             'accountPasswordInput ref unset',
           );
           this.accountPasswordInput.focus();
         },
       );
       throw e;
     }
   }
 }
 
 const deleteThreadLoadingStatusSelector = createLoadingStatusSelector(
   deleteThreadActionTypes,
 );
 const changeThreadSettingsLoadingStatusSelector = createLoadingStatusSelector(
   changeThreadSettingsActionTypes,
 );
 
 const ConnectedThreadSettingsModal: React.ComponentType<BaseProps> = React.memo<BaseProps>(
   function ConnectedThreadSettingsModal(props) {
     const changeInProgress = useSelector(
       state =>
         deleteThreadLoadingStatusSelector(state) === 'loading' ||
         changeThreadSettingsLoadingStatusSelector(state) === 'loading',
     );
     const viewerID = useSelector(
       state => state.currentUserInfo && state.currentUserInfo.id,
     );
     const userInfos = useSelector(state => state.userStore.userInfos);
     const callDeleteThread = useServerCall(deleteThread);
     const callChangeThreadSettings = useServerCall(changeThreadSettings);
     const dispatchActionPromise = useDispatchActionPromise();
     const threadInfo: ?ThreadInfo = useSelector(
       state => threadInfoSelector(state)[props.threadID],
     );
     const modalContext = useModalContext();
 
     if (!threadInfo) {
       return (
         <Modal onClose={modalContext.clearModal} name="Invalid thread">
           <div className={css.modal_body}>
             <p>You no longer have permission to view this thread</p>
           </div>
         </Modal>
       );
     }
 
     return (
       <ThreadSettingsModal
         {...props}
         threadInfo={threadInfo}
         changeInProgress={changeInProgress}
         viewerID={viewerID}
         userInfos={userInfos}
         deleteThread={callDeleteThread}
         changeThreadSettings={callChangeThreadSettings}
         dispatchActionPromise={dispatchActionPromise}
         onClose={modalContext.clearModal}
       />
     );
   },
 );
 
 export default ConnectedThreadSettingsModal;