Измените размер шрифта на метке CSS
.group {
margin-bottom: 20px;
}
.group label {
font-size: 10px;
}
.group2 label {
font-size: 4px;
}
Excited Elk
.group {
margin-bottom: 20px;
}
.group label {
font-size: 10px;
}
.group2 label {
font-size: 4px;
}<div class="group">
<label for="input1">First label</label>
<input type="text" name="input1">
</div>
<div class="group group2">
<label for="input2">Second label</label>
<input type="text" name="input2">
</div>