* {
    margin: 0;
    padding: 0;
    font-family: arial;
    font-size: 17px;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: rgb(0, 0, 0);
}

h1,
h2,
h3,
a,
p {
    margin: 8px 0;
}

h1,
h2,
h3 {
    text-align: center;
}

p {
    line-height: 30px;
}

h1 {
    font-size: 60px;
}

h2 {
    font-size: 25px;
    font-weight: normal;
    color: rgb(50, 50, 50);
}

header {
    width: 100%;
    height: 60px;
    padding: 0 5%;
    position: fixed;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
}

nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 30px;
}

nav a {
    margin: 30px;
}

nav a:hover {
    color: rgb(0, 160, 255);
}

main,
section {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 15px;
}

main {
    padding: 120px 5%;
}

section {
    padding-bottom: 150px;
}

form {
    max-width: 500px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

form input[type=text],
form input[type=email],
form input[type=password],
form textarea,
form button,
form div {
    width: 100%;
}

input,
button {
    margin: 8px 0;
    padding: 10px 15px;
}

button {
    border: none;
    cursor: pointer;
    color: rgb(255, 255, 255);
    background: rgb(0, 0, 0);
}

button:hover {
    background: rgb(20, 20, 20);
}

article {
    max-width: 700px;
    width: 100%;
    display: flex;
    flex-direction: column;
}

footer {
    border-top: 1px solid rgb(150, 150, 150);
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 15px;
}

#logo {
    font-size: 25px;
    font-weight: bold;
    font-style: italic;
}

#hamburger {
    display: none;
}

#login {
    margin-right: 10px;
    padding: 10px;
    border: 1px solid rgb(150, 150, 150);
    border-radius: 5px;
}

#signup {
    margin-left: 10px;
    padding: 10px;
    border-radius: 5px;
    color: rgb(255, 255, 255);
    background: rgb(0, 0, 0);
}

#banner {
    padding: 2px 10px;
    border: 1px solid rgb(150, 150, 150);
    border-radius: 999px;
    text-align: center;
}

#cta {
    padding: 20px;
    font-size: 20px;
    border-radius: 5px;
    text-align: center;
    color: rgb(255, 255, 255);
    background: rgb(0, 0, 0);
}

#cta:hover {
    background: rgb(40, 40, 40);
}

#sample-img {
    width: 100%;
    border-radius: 5px;
    box-shadow: 5px 5px 5px 5px rgb(180, 180, 180);
}

#price-box {
    padding: 20px 40px;
    border: 1px solid rgb(150, 150, 150);
}

.survey-card {
    max-width: 700px;
    width: 100%;
    margin-bottom: 20px;
    padding: 20px;
    border: 1px solid rgb(150, 150, 150);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.setting-item {
    max-width: 700px;
    width: 100%;
    padding: 20px;
    border: 1px solid rgb(150, 150, 150);
    display: flex;
    justify-content: space-between;
}

.option-row {
    display: flex;
    gap: 10px;
}

.red {
    background: rgb(220, 0, 0);
}

.red:hover {
    background: rgb(255, 0, 0);
}

@media screen and (max-width:1000px) {
    nav {
        width: 100%;
        top: 60px;
        left: -100%;
        padding: 20px 0;
        position: absolute;
        display: flex;
        flex-direction: column;
        transition: left 0.3s ease;
        border: 1px solid rgb(150, 150, 150);
        background: rgb(255, 255, 255);
    }

    nav.active {
        left: 50%;
    }

    #hamburger {
        display: block;
        font-size: 28px;
        cursor: pointer;
        user-select: none;
    }

    #login {
        display: none;
    }
}