form {
    margin: 50px auto;
    width: 85%;
    height: auto;
    box-shadow: 0 0 2px #3e3e3e;
    padding: 30px;
    text-align: center;
}

.upload-area {
    margin: 30px;
    width: auto;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    border: 1px dotted rgba(0, 0, 0, .4);

}

#input-files {
    top: 0;
    left: 0;
    opacity: 0;
    position: absolute;
    width: 100%;
    height: 100%;

}
.button{
    height: 80px;
    width: 50%;
    font-size: medium;
   
}
.button-center{
    text-align: center;

}