Avoir des labels flottants

<style>
 input:focus~.label-flottant,
 input:not(:focus):valid~.label-flottant,
 input[type=email]:not(:placeholder-shown)~.label-flottant {
   top: 5px;
   font-size: 12px;
 }

 .input:focus {
   outline: none;
 }
</style>