* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    background: linear-gradient(135deg, rgb(84, 125, 237) 0%, rgb(127, 60, 206) 100%);
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
}

.upload {
    display: inline-block;
    width: 100%;
    max-width: 600px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    padding: 25px;
    margin: 14px;
}

h1 {
    font-size: 1em;
    color: #6f48ad;
    margin-bottom: 20px;
}

form {
    position: relative;
    display: block;

    margin-bottom: 10px;
}

#formFiles input {
    position: relative;
    border: thin solid #ddd;
    padding: 12px;
    width: 100%;
    border-radius: 3px;
    margin-bottom: 10px;
}

#formFiles button {
    position: relative;
    cursor: pointer;
    padding: 14px;
    display: inline-block;
    background-color: #7233e8;
    color: #fff;
    font-weight: bold;
    font-size: 1.1em;
    border: none;
    outline: none;
    width: 100%;
    border-radius: 3px;
}

#formFiles button:hover {
    background-color: #5b12e6;
}

#progressBar {
    position: relative;
    display: none;
    background: linear-gradient(135deg, rgb(34, 130, 227) 0%, rgb(9, 226, 51) 100%);
    height: 16px;
    width: 0;
    line-height: 16px;
    color: #fff;
    font-size: 0.75em;
    overflow: hidden;
}

#return {
    font-size: 0.8em;
    font-weight: bold;
    margin-bottom: 5px;
}