style.css

/* =====    GENERAL STYLES  ===== */
* {
    margin: 0;
    font-family: inherit;
    box-sizing: border-box;
}

.container {
    width: min(800px, 85vw);
    margin-inline: auto;
}

body {
    background-color: #09090A;
    color: #A1A1AA;
    font-family: 'Roboto Mono', monospace;
    min-height: 100vh;
}

header {
    background-color: #09090A;
    position: fixed;
    width: 100%;
    top: 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 100px;
    padding-bottom: 48px;
}

header .container button {
    background-color: transparent;
    color: white;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    border: 1px solid #8B5CF6;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    height: 52px;
    padding: 16px 24px;
}

main {
    padding-top: 232px;
    padding-bottom: 48px;
}

main .container #form-habits {
    display: flex;
    gap: 32px;
    padding-right: 7.5vw;
    width: fit-content;
}

main .container #form-habits .habits {
    margin-top: 45px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

main .container #form-habits .habits .habit {
    font-size: 32px;
    line-height: 64px;
}

main .container #form-habits .days {
    display: flex;
    gap: 48px;
}

main .container #form-habits .days .day {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

main .container #form-habits .days .day p {
    font-size: 20px;
}

main .container #form-habits .days .day input {
    appearance: none;
    background-color: #18181B;
    width: 64px;
    height: 64px;
    border: 2px solid #27272A;
    border-radius: 8px;
}

main .container #form-habits .days .day input:checked {
    background-color: #8B5CF6;
    border-color: #A78BFA;
}

@media (max-width: 570px) {
    header .container button span {
        display: none;
    }
}