* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Quicksand", sans-serif;
}

html {
    font-size: 62.5%;
}

.container {
    width: 100%;
    height: 100vh;
    background-color: #12121f;
    color: #eee;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calender {
    width: 45rem;
    height: 52rem;
    background-color: #222227;
    box-shadow: 0 0.5rem 3rem rgba(0, 0, 0, 0.4);
}

.month {
    width: 100%;
    height: 12rem;
    background-color: #167e56;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    text-align: center;
    text-shadow: 0 .3rem .5rem rgba(0, 0, 0, 0.5);
}

.month i {
    font-size: 2.5rem;
    cursor: pointer;
}

.month h1 {
    font-size: 3rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: .2rem;
    margin-bottom: 1rem;
}

.month p {
    font-size: 1.6rem;
}

.weekdays {
    width: 100%;
    height: 5rem;
    padding: 0 0.4rem;
    display: flex;
    align-items: center;
}

.weekdays div {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.1rem;
    width: calc(44.2rem / 7);
    display: flex;
    justify-content: center;
    align-items: center;
    text-shadow: 0 0.3rem 0.5rem rgba(0, 0, 0, 0.5);
}

.days {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    padding: 0.2rem;
}

.days div {
    font-size: 1.4rem;
    margin: 0.3rem;
    width: calc(40.2rem / 7);
    height: 5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    text-shadow: 0 0.3rem 0.5rem rgba(22, 18, 18, 0.5);
}

.days div:hover:not(.today) {
    background-color: #262626;
    border: 0.2rem solid #777;
    cursor: pointer;
}

.prev-date,
.next-date {
    opacity: 0.5;
}

.today {
    background-color: #167e56;
}

@media screen and (max-width: 1050px) {
    .calender {
        width: 40rem;
        height: 50rem;
    }
}

@media screen and (max-width: 1000px) {
    .month i {
        font-size: 2rem;
    }
    .month h1 {
        font-size: 3rem;
        font-weight: 400;
        letter-spacing: .1rem;
        margin-bottom: 1rem;
    }
    .month p {
        font-size: 1.2rem;
    }
}

@media screen and (max-width: 480px) {
    .calender {
        width: 35rem;
        height: 45rem;
    }
    .month i {
        font-size: 1.7rem;
    }
    .month h1 {
        font-size: 2rem;
        font-weight: 300;
        letter-spacing: .06rem;
        margin-bottom: 0.5rem;
    }
    .month p {
        font-size: 1rem;
    }
    .days {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        padding: 0.2rem;
    }
    .days div {
        font-size: 1.2rem;
        margin: 0.12rem;
        width: calc(32rem / 7);
        height: 4rem;
        display: flex;
        justify-content: center;
        align-items: center;
    }
}

.weekdays {
    width: 100%;
    height: 5rem;
    padding: 0 0.1rem;
    display: flex;
    align-items: center;
}

.weekdays div {
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.08rem;
    width: calc(40rem / 7);
    display: flex;
    justify-content: center;
    align-items: center;
    text-shadow: 0 0.3rem 0.5rem rgba(0, 0, 0, 0.5);
}