styles.css

@import url("https://fonts.googleapis.com/css2?family=Comfortaa:wght@400;600;700&family=Prompt:wght@300;700&display=swap");

:root {
    /* Colors */
    --background-color: hsl(0, 0%, 0%);
    --text-color: hsl(0, 0%, 100%);
    --text-box-color: hsl(0, 0%, 20%);

    /* Font */
    --body-font: "Prompt", sans-serif;
    --font-regular: 300;
    --font-bold: 700;
    --h1-font-size: 2.5rem;
    --p-font-size: 1.25rem;
}

html {
    scroll-behavior: smooth;
}

body {
    width: 100%;
    min-height: 100vh; 
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--body-font);
    margin: 0; 
    display: flex; /* Use flex layout */
    flex-direction: column; /* Stack children vertically */
    align-items: center; /* Center content horizontally */
    box-sizing: border-box; /* Include padding and border in element's total width and height */
}

p {
    font-size: var(--p-font-size);
}

form {
    width: 60vw;
    max-width: 500px;
    min-width: 300px;
    margin: 0 auto;
    box-sizing: border-box; /* Include padding and border in the element's total width and height */
}

fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

label {
    display: block;
}

input,
select {
    margin: 10px 0 20px 0;
    width: 100%;
    height: 2.5rem;
    font-size: var(--p-font-size);
    box-sizing: border-box; /* Include padding and border in the element's total width and height */
}

textarea {
    width: 100% !important; 
    max-width: 800px !important;
    height: 150px;
    font-size: var(--p-font-size);
    padding: 10px;
    box-sizing: border-box; /* Include padding and border in the width and height */
}

input[type="submit"] {
    display: block;
    width: 60%;
    margin: 1em auto;
    height: 2em;
    font-size: 1.1rem;
    color: var(--text-color);
    background-color: var(--background-color);
    border-color: var(--text-color);
}

.text-area-align {
    text-align: center;
}

.inline {
    width: unset;
    margin: 0 0.5em 0 0;
    vertical-align: middle;
    display: inline;
}

#title {
    font-size: var(--h1-font-size);
    text-align: center;
}

#description-text {
    text-align: center;
    padding: 0 25px;
}

/* Mobile specific */
@media screen and (max-width: 600px) {
    body {
        justify-content: center; 
    }

    form {
        width: 80vw; 
    }
    
    input[type="submit"] {
        width: 70%; 
    }
}