<!DOCTYPE html>
<style>
.min {
    min-width: -ie-min-content;
    min-width: -moz-min-content;
    min-width: -webkit-min-content;
    min-width: min-content;
}
.max {
    min-width: -ie-max-content;
    min-width: -moz-max-content;
    min-width: -webkit-max-content;
    min-width: max-content;
}
input {
    width: 10px;
    background-color: pink;
    margin: 0;
}
</style>

<input class="min">
<input class="max">

<br>

<input class="min" type="file">
<input class="max" type="file">