默认样式
修改后的样式
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>type:file</title><style>.inputFile{font-size: 0;}.inputFile[type="file"] {color: gray;}.inputFile::file-selector-button {height: 3rem;font-size: 1rem;color: #fff;border-radius: .25rem;border: 1px solid #f14a24;padding: .75rem 1rem;background-color: #f14a24;box-sizing: border-box;font-family: inherit;cursor: pointer;}</style>
</head>
<body><input type="file" class="inputFile">
</body>
</html>
