style.css

#app {
    font-family: Avenir, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-align: center;
    color: #2c3e50;
    margin-top: 60px;
}

.drop-zone {
    max-width: 200px;
    height: 200px;
    padding: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: 500;
    font-size: 20px;
    cursor: pointer;
    color: #fff;
    border: 4px dashed #fff;
    border-radius: 10px;
}

.drop-zone--over {
    border-style: solid;
}

.drop-zone__input {
    display: none;
}

.drop-zone__thumb {
    width: 100%;
    height: 100%;
    border-radius: 10px;
    overflow: hidden;
    background-color: #cccccc;
    background-size: cover;
    position: relative;
}

.drop-zone__thumb::after {
    content: attr(data-label);
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 5px 0;
    color: #ffffff;
    background: rgba(0, 0, 0, 0.75);
    font-size: 14px;
    text-align: center;
}

* {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans',
        'Helvetica Neue', sans-serif;
}

html,
body {
    margin: 0;
    height: 100%;
    overflow: hidden;
}

h1 {
    color: #fff;
    margin-bottom: 144px;
    margin-left: 45px;
    margin-right: 45px;
    text-align: center;
}

#input-menu {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff;
    background: #870000; /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #190a05, #870000); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(
        to right,
        #190a05,
        #870000
    ); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

.progress {
    height: 10px;
    width: 100%;
}

#bar {
    width: 0%;
    height: 100%;
    background: #d9a7c7; /* fallback for old browsers */
    background: -webkit-linear-gradient(to left, #fffcdc, #d9a7c7); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(
        to left,
        #fffcdc,
        #d9a7c7
    ); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    box-shadow: 5px 5px 20px #d9a7c7, -5px -5px 20px #d9a7c7;
    border-top-right-radius: 100vmax;
    border-bottom-right-radius: 100vmax;
}