html, body {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #102E4A;
}

#main-container {
    height: 280px;
    width: 600px;
    display: flex;
    flex-direction: column;
}

#head {
    width: 600px;
    height: 30px;
    display: flex;
    justify-content: space-around;
}

.head {
    height: 30px;
    width: 90px;
    display: flex;
    flex-direction: column;
    justify-content: end;
}

.black {
    height: 20px;    
    width: 90px;
    background-color: black;
}

.blue {
    height: 10px;
    width: 90px;
    background-color: #5887FF ;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

/* #head1 {
    top: 329px;
    left: 750px;
}

#head2 {
    top: 329px;
    right: 750px;
} */

#container {
    height: 250px;
    width: 600px;
    background-color: #5887FF;
    border-radius: 30px;
    display: flex;
    flex-direction: column; 
    justify-content: space-evenly;    
    align-items: center;    
}

#stopwatch {
    width: 550px;
    height: 125px;
    background-color: rgba(85, 193, 255, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 4.5rem;
    font-family: monospace;
    box-shadow: inset 0px 0px 10px 5px black;
    border: 3px solid #5887FF;
    border-radius: 100px;
    color: #003554;
}

#cmd {
    width: 500px;
    height: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#start, #stop, #reset {
    width: 100px;
    height: 50px;
}

.btn {
    height: 50px;
    width: inherit;
    font-family: monospace;
    font-weight: 900;
    font-size: 1.5rem;
    border: none;
    color: #fefae0;
    box-shadow: inset 0px 0px 10px 5px black;
}

#start button {
    background-color: #283618;
}

#stop button {
    background-color: #780000;
}

#reset button {
    background-color: #023047;
}

button:active {
    transform: scale(0.95);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}