*{
    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;
}
.calendar{
    width: 45rem;
    height: 52rem;
    background-color: #222227;
    box-shadow: 0 0.5rem 3rem rgba(0,0,0,0.5);
}
.month{
    width: 100%;
    height: 12rem;
    background-color: #167e56;
    display: flex;
    justify-content: space-between;
    padding:  2rem;
    text-align: center;
    text-shadow:0 0.5rem 3rem rgba(0,0,0,0.5) ;
}
.month i{
    font-size: 2.5rem;
    cursor: pointer;
}
.month h1{
    font-size: 5rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2rem;
    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);

}
.date{
    margin: 0.1rem;
}
.date h1{
    font-size: 2.5rem;
}
.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 0.5rem 0.5rem rgba(0,0,0,0.5);
    transition: background-color 0.2s;
}
.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:400px){
    .container{
        width: 100%;
    }
    .calendar{
        width: 100%;
    }
    .month{
        padding-top: 4rem;
        width: 100%;
        margin: auto;
    }
    .weekdays{
        width: 70%;
        margin: auto;
    }
    .days{
        width: 80%;
        margin: auto;
    }
}

@media screen  and (max-width:600px){
    .container{
        width: 100%;
    }
    .calendar{
        width: 50%;
    }
    .month{
        padding-top: 4rem;
        width: 100%;
        margin: auto;
    }
    .weekdays{
        width: 100%;
        margin: auto;
        
    }
    .weekdays div{
        font-size: 1rem;
    }
    .days{
        width: 100%;
        margin: auto;
    }
    .days div{
        width: 12%;
    }
}