我这样问是因为用户在文本区域中输入的文本与其他字段中的文本不同. 字体样式不同.如何更改为该字段区域的字体样式？ 首先，我想修复它，之后，如果造型是可能的，我想学习如何.
.contact-form {
background-color: white;
}
input,
select,
textarea {
background-color: #f2f2f2;
display: block;
margin: auto;
font-size: 1em;
padding: 25px;
border: none;
outline: none;
margin-top: 20px;
margin-bottom: 16px;
box-sizing: border-box;
resize: vertical;
}
input[type=submit] {
font-family: avenir_nextdemi_bold;
background-color: #437bff;
font-size: 1.2em;
color: white;
padding: 12px 20px;
border-radius: 30px;
width: 15%;
border: none;
cursor: pointer;
}
input[type=submit]:hover {
background-color: #133edb;
}
::placeholder {
font-family: avenir_nextdemi_bold;
}
textarea {
height: 200px;
}<form action="/action_page.php">
<input type="text" id="lname" name="lastname" placeholder="Naam" required>
<input type="email" id="email" name="email" placeholder="Email adres" required>
<textarea id="subject" name="subject" placeholder="Vertel ons over je project" required></textarea>
<input type="submit" value="Submit">
</form>