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

h1 {
    font-family: 'Rock Salt', 'Trebuchet MS', 'Arial', 'sans-serif';
    color: #ebebeb;
}

h2 {
    font-family: 'Trebuchet MS', 'Arial', 'sans-serif';
    text-align: center;
    padding: 15px;
}

h3 {
    font-family: 'Trebuchet MS', 'Arial', 'sans-serif';
    background-color: #14213D;
    color: #ebebeb;
    text-align: center;
    padding: 20px;
    border-top-right-radius: 6px;
    border-top-left-radius: 6px;
}

body {
    width: 100%;
    margin: 0;
}

main {
    font-family: 'Trebuchet MS', 'Arial', 'sans-serif';
    padding: 0 5%;
    margin: 30px 20%;
}

header {
    display: flex;
    background-color: #14213D;
    align-items: center;
    justify-content: center;
    padding: 25px;
    gap: 30px;
}

#menu {
    font-family: 'Trebuchet MS', 'Arial', 'sans-serif';
    display: block;
    font-size: 2rem;
    font-weight: 500;
    text-decoration: none;
    padding: .5rem .75rem;
    background-color: #ebebeb;
    color: black;
}

#menu::before {
    content: "≡";
}

.navigation {
    justify-content: center;
    background-color: #ebebeb;
    padding: 15px;
}

.navigation li {
    display: none;
    padding: 0;
    margin: 0;
}

.navigation a {
    display: block;
    padding: .5rem;
    text-align: left;
    text-decoration: none;
    color: #000;
    font-weight: 500;
    transition: 0.5s;
}

.navigation a:hover,
.navigation a:active {
    color: white;
    background-color: black;
}

.show li {
    display: block;
}

#menu.show::before {
    content: "x";
}

ul {
    list-style-type: none;
    padding: 20px;
}

footer p {
    padding: 10px;
}

footer {
    margin: auto;
    background-color: #14213D;
    color: #ebebeb;
    text-align: center;
    padding: 20px;
}


/*----------- FORM ---------------*/
:root {
    font-size: 1rem;
    --border-color: #14213D;
    --input-bgcolor: #555;
    --input-border-color: #999;
    --width: 100%;
}

form fieldset {
    margin: 2rem 0;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: .5rem 2%;

}

form legend {
    color: var(--border-color);
    margin: 0 1rem;
    padding: 0 .5rem;
}

form label.top,
form div,
form label.rating {
    display: block;
    padding-top: 1rem;
}

form label.top input,
form label.top select {
    -webkit-appearance: none;
    display: block;
    border: 1px solid var(--input-border-color);
    border-radius: 4px;
    padding: .75rem;
    color: var(--input-bgcolor);
    width: var(--width);
    max-width: 20rem;
    background-color: rgba(0, 0, 0, 0.1);
}

form label.rating input {
    display: block;
    padding: 1rem;
    width: var(--width);
    max-width: 18rem;
}

form input.submitBtn {
    border: none;
    background-color: #13979c;
    color: white;
    border-radius: 1rem;
    padding: .75rem 1.5rem;
    margin: 0 0 2rem 2%;
    width: var(--width);
    max-width: 20rem;
}

form label.top input:required {
    border-left: rgb(180, 14, 14) solid 6px;
}

form label.top input:required:valid {
    border-left: green solid 6px;
}

#rangevalue {
    font-size: 2rem;
}

#rangevalues {
    display: flex;
    margin: 0 0 20px 20px;
    width: 270px;
}

#rangevalues option {
    flex: 1 1 auto;
}