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

body {
    background-color: #F5F9F9;
    color: #304659;
    font-family: "Lato", sans-serif;
    max-width: 1080px;
    margin: auto;
}

.container {
    margin: 0 auto;
    padding: 1rem;
}

/* HEADER */

header {
    border-bottom: 1px solid #D5DEE6;
    margin-bottom: 1rem;
}

/* HEADER - MOBILE */

.mobile-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.mobile-nav:hover {
    cursor: pointer;
}

.mobile-nav span {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    font-weight: 700;
}

.widescreen-nav {
    display: none;
}

/* MAIN */

main span {
    text-transform: uppercase;
    color: #8197AA;
    display: inline-block;
    margin-bottom: 1rem;
}

main h1 {
    margin-bottom: 1.25rem;
}

main input, main button {
    width: 100%;
}

main input {
    background-color: #E1E9F0;
    border: none;
    padding: .6rem;
    margin-bottom: .75rem;
}

main input::placeholder {
    color: #304659;
}

main button {
    background-color: #304659;
    color: #F5F9F9;
    padding: .6rem;
    border: none;
    margin-bottom: 1.25rem;
}

.main-img img {
    width: 100%;
    margin: 1.5rem 0 2rem;
}

/* FEATURES */

.feature {
    border-bottom: 1px solid #D5DEE6;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
}

.feature:last-child {
    border-bottom: none;
}

.feature img {
    margin-bottom: 1rem;
}

.feature h3 {
    margin-bottom: .5rem;
}

.feature p {
    margin: 0 0 1rem;
}

.feature a {
    color: #304659;
    font-weight: 700;
    text-decoration: none;
}

/* COLLECTING */

.collecting {
    background-color: #FFFFFF;
    padding-top: 2rem;
}

.collecting h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.collecting section {
    height: 3rem;
    width: 100%;
    background-color: #E1E9F0;
    margin-top: 2rem;
}

/* MEDIA QUERIES */

@media screen and (min-width: 480px) {
    form {
        display: flex;
        align-items: baseline;
    }

    main input {
        width: auto;
        min-width: 80%;
    }

    main button {
        width: auto;
        padding: .6rem 1.5rem;
    }

    .features {
        display: flex;
        flex-wrap: wrap;
        gap: 2%;
    }

    .feature {
        width: 49%;
    }

    .feature:nth-child(3) {
        border-bottom: none;
    }
}

@media screen and (min-width: 640px) {
    .main-flex {
        display: flex;
        align-items: center;
    }

    main input {
        width: auto;
        min-width: 70%;
    }
}

@media screen and (min-width: 720px) {
    .feature {
        width: 23.5%;
    }

    .mobile-nav {
        display: none;
    }

    .widescreen-nav {
        display: flex;
        justify-content: space-between;
        align-items: baseline;
    }

    .widescreen-nav span {
        font-size: 1.5rem;
        font-weight: 700;
    }

    .widescreen-nav ul {
        display: flex;
        list-style: none;
    }

    .widescreen-nav a {
        display: inline-block;
        color: #304659;
        text-decoration: none;
        text-align: center;
        width: 5.25rem;
        margin: 0 .5rem;
    }

    .widescreen-nav button {
        background-color: #304659;
        color: #F5F9F9;
        padding: .6rem 1.5rem;
        border: none;
    }
}