style.css

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


html {
    font-family: 'lato' ,'Arial' , sans-serif;
    text-rendering: optimizeLegibility;
}

.index-main
{
    width: 100%;
    height: 100vh;
    background-image:linear-gradient(rgba(0, 0, 0, 0.71),rgba(0, 0, 0, 0.7)),url('front.jpg');
    background-size: cover;
    background-position: center;
}

.header-content
{
    width: 100%;
    display: flex;
    align-content: center;
    align-self: center;
    justify-content: center;
}

.header-content-text
{
    font-size: 3vw;
    font-weight: 500;
    color: #f4f7c5;
    letter-spacing: 0.5px;
}

.header-content-sub
{
    width: 100%;
    display: flex;
    align-content: center;
    align-self: center;
    justify-content: center;
}

.header-content-info
{
    font-size: 18px;
    color: #f4f7c5;
}


.upload-section
{
    width: 100%;
    margin-top: 5%!important;
}

.upload-file
{
    width: 100%;
    margin-top: 1%;
    margin-bottom: 1%;
}

.file-form
{
    padding-left: 4%;
    padding-right: 4%;
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.file-form-input
{
    max-width: 50%;
    border-radius: 200px;
    border: 1px solid #41b3a3;
    color: white;
    display: inline-block;
    padding: 8px 20px 8px 20px;
    font-weight: 300;
    text-decoration: none;
    font-size: 20px;
    transition: background-color 0.2s , border 0.2s , color 0.2s;
}

.file-form-input:focus
{
    outline: none;
}

.btn
{
    width: 10%;
    font-size: 20px!important;
    height: 15%;
    max-width: 30%;
}


.uploadOR
{
    display: flex;
    justify-content: center;
    text-align: center;
    align-items: center;
}

.uploadOR > span
{
    font-size: 15px;
    font-weight: 400;
    color: #f4f7c5;
    padding-top: 1%;
    padding-bottom: 1%;
}


.upload-link
{
    width: 100%;
    margin-top: 1%;
    margin-bottom: 1%;
}


.link-form
{
    padding-bottom: 4%;
    padding-left: 4%;
    padding-right: 4%;
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.link-form-input
{
    width: 60%;
    border: 1px solid #41b3a3;
    display: inline-block;
    padding: 4px 15px 4px 15px;
    font-weight: 300;
    text-decoration: none;
    font-size: 20px;
    transition: background-color 0.2s , border 0.2s , color 0.2s;
}

    .footer
    {
        padding-left: 2%;
        padding-right: 2%;
    }

@media screen and (max-width: 415px)
{
    .index-main
    {

        background-position: inherit;
    }
    .header-content
    {
        margin-top: 15%;
    }

    .header-content-text
    {
        font-size: 22px;
    }

    .header-content-info
    {
        font-size: 11px;
    }


    .file-form-input
    {
        /*height: 30px;*/
          border-radius: 200px;
        padding: 4px 10px 4px 10px;
        font-size: 10px;

    }

    .btn
    {
        padding-top: 6px!important;
        padding-bottom: 6px!important;
        width: 25%;
        font-size: 11px!important;
        line-height: 1
    }

    .link-form-input
    {
        width: 68%;
        padding-right: 1%!important;
        padding-left: 1%!important;
        font-size: 10px;
        padding: 1px 15px 1px 15px;
    }

    .upload-section
    {
        margin-top: 20%!important;
    }

    .footer
    {
        margin-top: 15%;
    }

    .upload-file
    {
        margin-top: 3%;
        margin-bottom: 3%;
    }


    .upload-link
    {
        margin-top: 3%;
        margin-bottom: 3%;
    }

}

@media screen and (min-width: 416px) and (max-width: 615px)
{
    .index-main
    {
        background-position: inherit;
    }
    .header-content
    {
        margin-top: 15%;
    }

    .header-content-text
    {
        font-size: 22px;
    }


    .header-content-info
    {
        font-size: 14px;
    }

    .file-form-input
    {
        height: 33px;
        border-radius: 200px;
        padding: 4px 10px 4px 10px;
        font-size: 12px;

    }

    .btn
    {
        padding-top: 6px!important;
        padding-bottom: 6px!important;
        width: 20%;
        font-size: 12px!important;
        line-height: 1
    }

    .link-form-input
    {
        font-size: 11px;
        padding: 1px 15px 1px 15px;
    }

    .upload-section
    {
        margin-top: 20%!important;
    }

    .upload-file
    {
        margin-top: 3%;
        margin-bottom: 3%;
    }


    .upload-link
    {
        margin-top: 3%;
        margin-bottom: 3%;
    }

    .footer
    {
        margin-top: 5%;
    }

}

@media screen and (min-width: 615px) and (max-width: 970px)
{

    .header-content
    {
        margin-top: 10%;
    }

    .header-content-text
    {
        font-size: 25px;
    }


    .header-content-info
    {
        font-size: 15px;
    }

    .file-form-input
    {
        height: 33px;
        border-radius: 200px;
        padding: 4px 10px 4px 10px;
        font-size: 12px;

    }

    .btn
    {
        padding-top: 6px!important;
        padding-bottom: 6px!important;
        width: 15%;
        font-size: 12px!important;
        line-height: 1
    }

    .link-form-input
    {
        font-size: 12px;
        padding: 1px 15px 1px 15px;
    }

        .upload-file
    {
        margin-top: 3%;
        margin-bottom: 3%;
    }


    .upload-link
    {
        margin-top: 3%;
        margin-bottom: 3%;
    }

    .upload-section
    {
        margin-top: 10%!important;
    }


}