/* Base CSS */
#header-container, #serviceSelector, #classificationSelector, h1 {
    text-align: center;
}

#serviceSelector, #classificationSelector {
    padding: 0.1em 0.5em;
    font-size: 1em;
}

#content {
    margin: 50px 0;
}

em {
    color: darkred;
}

div#imgur-images {
    text-align: center;
}

img.imgur-image {
    max-width: 20%;
    width: 100%;
    max-height: 500px;
    cursor: pointer;
}

#load, #setnumber {
    padding: 0.1em 0.5em;
    font-size: 1em;
}

#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 10px;
    display: none;
    padding: 0.3em 0.5em;
    font-size: 1.5em;
    cursor: pointer;
    background-color: #e3e3e3;
    border: none;
    border-radius: 5px;
}

/* Responsive Styles */
@media only screen and (max-width: 600px) {
    h1 {
        font-size: 1.5em;
        margin-bottom: 10px;
    }

    #serviceSelector, #classificationSelector, #load, #setnumber {
        font-size: 0.8em;
        padding: 8px 16px;
    }

    #back-to-top {
        padding: 8px 16px;
        font-size: 1.5em;
    }
}