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

html, body{
    font-family: 'Poppins', 'Whyte';
    background: linear-gradient( to top, #00ff85, #fff432);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container{
    max-height: 550px;
    max-width: 400px;
    user-select: none;
    background: #252525;
    border-radius: 50px;
    border: 4px solid #fff;
    padding: 30px 25px 90px;
    text-align: center;
    color: azure;
    box-shadow: 0 15px 35px rgb(17, 17, 17);
    overflow: hidden;
    margin: auto;
    /* transition: height 5s ease; */
}
h1{
    margin-top: 50px;
}
h2{
    margin-top: 25px;
}
ul{
    list-style: none;
    font-size: 1.1em;
    white-space: nowrap;
    text-align: center;
}
ul li{
    margin-top: 30px;
    display: inline-block;
}
.month{
    margin-right: 29px;
    margin-left: 10px;
}
.year{
    margin-left: -112px;
    margin-right: 20px;
}
.date{
    margin-right: -50px;
    margin-left: 17px;
}
input{
    width: 70px;
    background: #252525;
    border-top: 2px solid;
    border-left: 2px solid;
    margin-top: 40px;
    color: white;
    padding-left: 10px;
    transition: all 0.4s ease;
}
input:focus{
    border: 5px solid  #fff432;
} 
#month{
    margin-right: 30px;
    margin-left: 30px;
}
button{
    margin-top: 20px;
    padding: 8px;
    background: #00ff85;
    border: 3px solid #fff;
    color: black;
    border-radius: 6px;
    transition: all 0.7s ease;
}
button:hover{
    background: #fff432;
}
h3{
    margin-top: 40px;
    font-size: 1.6em;
}
.last{
    margin-top: 10px;
}

footer{
    position: absolute;
    top: 99%;
    background: #0e0707;
    display: inline-block;
    color: rgb(0, 255, 0);
    width: 100%;
    padding-top: 5px;
    text-align: center;
}


/* chrome, safari, edge, opera  ::: to hide up and down arrows */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button{
    -webkit-appearance: none;
    margin: 0;
}
 /* for firefox */
 input[type=number]{
    -moz-appearance: textfield;
 }


 @media screen and ( max-width: 550px) {
    .container{
        width: 100%;
    }
    input{
        padding: 5px;
    }
}
 @media screen and ( max-width: 383px) {
    input{
        width: 50px;
    }
    .last{
        margin-top: 10px;
    }
}
 @media screen and ( max-width: 325px) {
    .container{
        padding-top: 10px;
    }
    input{
        width: 50px;
    }
    .last{
        margin-top: 10px;
    }
}
@media screen and ( max-width: 325px){
    h1{
        font-size: 1.8em;
    }
}
@media screen and ( max-width: 308px) {
    .container{
        overflow-y: none;
    }
    #date{
        /* margin: 0; */
        margin-top: 10px;
        margin-left: 35%;
        padding-left: 10px;
    }
    #month{
        /* margin: 0; */
        margin-top: 30px;
        margin-left: 35%;
        padding-left: 10px;
    }
    #year{
        /* margin: 0; */
        margin-top: 30px;
        margin-left: 35%;
        padding-left: 10px;
    }

    input{
        display: block;
        width: 5.5em;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    h1{
        font-size: 1.5em;
    }
    h3{
        font-size: 1.4em;
    }
}