How to implement secure remember username and password in react.js - reactjs

Question

<Formik
initialValues={LoginSchema}
validationSchema={LoginSchemaValidation}
onSubmit={(values, { setSubmitting, resetForm }) => {
this.handleSubmit(values);
setSubmitting(false);
resetForm();
}}
>
<Form>
<div className="input-group mb-3">
<Field name="username" type="email" className="form-control" placeholder="Email" />
<div className="input-group-append">
<div className="input-group-text">
<span>
<FontAwesomeIcon icon={faEnvelope} />
</span>
</div>
</div>
</div>
<p className="errors">
<ErrorMessage name="username" />
</p>
<div className="input-group mb-3">
<Field
name="password"
type="password"
className="form-control"
placeholder="Password"
/>
<div className="input-group-append">
<div className="input-group-text">
<span>
<FontAwesomeIcon icon={faLock} />
</span>
</div>
</div>
</div>
<p className="errors">
<ErrorMessage name="password" />
</p>
<div className="input-group mb-3">
<label>
<Field name="isRemember" type="checkbox"/> Remember Me
</label>
</div>
<div className="row">
<div className="col-12">
<button type="submit" className="btn btn-yellow btn-block">
Sign In
</button>
</div>
</div>
</Form>
</Formik>
This is my react form for user input, i used spring boot as backend.
Now i want to implement remember me feature at front-end
Is it secure to store username and password in local storage?
If not then how should i implement this functionality?