html - Cross-browser custom styling for file upload button

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Answer 1

I'm posting this because (to my surprise) there was no other place I could find that recommended this.

There's a really easy way to do this, without restricting you to browser-defined input dimensions. Just use the <label> tag around a hidden file upload button. This allows for even more freedom in styling than the styling allowed via webkit's built-in styling^[1].

The label tag was made for the exact purpose of directing any click events on it to the child inputs^[2], so using that, you won't require any JavaScript to direct the click event to the input button for you anymore. You'd to use something like the following:

label.myLabel input[type="file"] {
    position:absolute;
    top: -1000px;
}

/***** Example custom styling *****/
.myLabel {
    border: 2px solid #AAA;
    border-radius: 4px;
    padding: 2px 5px;
    margin: 2px;
    background: #DDD;
    display: inline-block;
}
.myLabel:hover {
    background: #CCC;
}
.myLabel:active {
    background: #CCF;
}
.myLabel :invalid + span {
    color: #A44;
}
.myLabel :valid + span {
    color: #4A4;
}

<label class="myLabel">
    <input type="file" required/>
    <span>My Label</span>
</label>