::placeholder {
color: #000000;
}
input[type=name],
input[type=company],
input[type=email],
input[type=textarea],
input[type=submit],
input[type=tel] {
width: 100%;
padding: 15px;
display: inline-block;
border: none;
outline: none;
border-radius: 30px;
box-sizing: border-box;
font-family: 'Roboto', sans-serif;
font-size: 15px;
background: #FFFFFF;
}
.site-input-container {
background-image: linear-gradient(white, white), radial-gradient(circle at top right, #006699, #9900CC);
background-origin: border-box;
background-clip: padding-box, border-box;
border: solid 5px transparent;
border-radius: 30px;
margin-bottom: 10px;
overflow: hidden;
box-sizing: border-box;
}
.site-message-container {
width: 100%;
min-width: 100%;
max-width: 100%;
min-height: 200px;
max-height: 200px;
margin-bottom: 10px;
background-image: linear-gradient(white, white), radial-gradient(circle at top right, #006699, #9900CC);
background-origin: border-box;
background-clip: padding-box, border-box;
border: solid 5px transparent;
border-radius: 30px;
padding: 0;
overflow: hidden;
box-sizing: border-box;
}
.site-form-holder {
width: 60%;
margin-left: auto;
margin-right: auto;
}
textarea {
width: 100%;
min-width: 100%;
max-width: 100%;
min-height: 190px;
max-height: 190px;
padding: 15px;
resize: none;
display: inline-block;
outline: none;
border: none;
box-sizing: border-box;
font-family: 'Roboto', sans-serif;
font-size: 15px;
border-radius: 30px;
}
.site-submit-container:hover {
background-image: linear-gradient(-45deg, #006699, #9900CC), radial-gradient(circle at top right, #006699, #9900CC);
}
.site-submit-container:hover input {
background: transparent;
color: #fff;
}
<div class="site-form-holder">
<form method="post" name="process" action="process" autocomplete="off">
<div class="site-input-container">
<input type="name" id="forename" name="forename" placeholder="Forename" required=""> <br>
</div>
<div class="site-message-container">
<textarea name="message" id="message" placeholder="Your message." maxlength="1000" required=""></textarea>
</div>
<div class="site-input-container site-submit-container">
<input type="submit" name="submit" id="submit" value="Contact Us" required="">
</div>
</form>
</div>