/* Header section */
header {
    width: 100%;
    height: 70vh;
    margin: 60px 0px 0px 0px;
    padding: 0;
    position: relative;
    z-index: 1;
}
header picture {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}
header img {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    object-fit: cover;
    object-position: center;
}
header h2 {
    font-size: 30px;
    font-family: 'Times New Roman', Times, serif;
}

/* Main Section */
#send-layout {
    display: flex;
    flex-direction: row;
}
#send {
    text-transform: none;
    margin: 10px;
    border-radius: 20px;
    font-size: 18px;
    width: 100px;
}
#progressbar {
    margin: 10px 0px 10px 0px;
}

/* Small screens (Mobile) */
@media only screen and (max-width: 600px) {
    /* Header Section */
    header div {
        position: absolute;
        top: 35%;
        left: 15%;
        color: white;
        background-color: rgba(0, 0, 0, 0.4);
        width: 70%;
        padding: 0px;
        margin: 0px;
        text-align: center;
    }

    /* Main Section */
    main {
        width: 90%;
        margin: 10px auto 3% auto;
    }
}

/* Medium screens (Tablets) */
@media only screen and (min-width: 601px) and (max-width: 1024px) {
    /* Header Section */
    header div {
        position: absolute;
        top: 30%;
        left: 25%;
        color: white;
        background-color: rgba(0, 0, 0, 0.4);
        width: 50%;
        padding: 20px;
        text-align: center;
    }

    /* Main Section */
    main {
        width: 50%;
        margin: 10px auto 3% auto;
    }
}

/* Large screens (Desktops) */
@media only screen and (min-width: 1025px) {
    /* Header Section */
    header div {
        position: absolute;
        top: 30%;
        left: 35%;
        color: white;
        background-color: rgba(0, 0, 0, 0.4);
        width: 30%;
        padding: 20px;
        text-align: center;
    }

    /* Main Section */
    main {
        width: 50%;
        margin: 10px auto 3% auto;
    }
}