Есть несколько способов сделать это.
Метод 1:
label {
display: inline-block;
width: 80px;
}
<html>
<body>
<h2>Radio Buttons</h2>
<form>
<label for="male">Male</label>
<input type="radio" id="male" name="gender" value="male">
<br>
<label for="female">Female</label>
<input type="radio" id="female" name="gender" value="female">
<br>
<label for="other">Other</label>
<input type="radio" id="other" name="gender" value="other">
</form>
</body>
</html>
Метод 2:
div {
display: flex;
width: 90px;
justify-content: space-between;
}
<html>
<body>
<h2>Radio Buttons</h2>
<form>
<div>
<label for="male">Male</label>
<input type="radio" id="male" name="gender" value="male">
</div>
<br>
<div>
<label for="female">Female</label>
<input type="radio" id="female" name="gender" value="female">
</div>
<br>
<div>
<label for="other">Other</label>
<input type="radio" id="other" name="gender" value="other">
</div>
</form>
</body>
</html>