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

main {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

header {
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-end;
    align-items: center;
    gap: 10px;
    font-size: 200%;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    border-bottom: 4px solid black;
}

.digitalclock {
    display: flex;
    gap: 7px;
    font-size: 300%;
}

.container {
    padding: 15px;
    border: 5px solid black;
    border-radius: 50px;
}

footer {
    border-top: 4px solid black;
    display: flex;
    align-self: center;
    justify-content: center;
    font-size: 150%;
    padding: 20px;
}

/* *****************************************************************************************************
********************************************************************************************************
Media Query
********************************************************************************************************
********************************************************************************************************/
@media only screen and (max-width: 648px){
    .digitalclock {
        flex-direction: column;
        font-size: 4em;
        align-items: center;
    }

    #c1, #c2{
        display: none;
    }
    #hour, #min {
        text-decoration: underline;
    }

}