body{
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color:hsl(0,0%,90%);
}

#myh1{
    font-family: Arial, sans-serif;
    font-size: 4em;
    color:hsl(0,0%,25%);
}

#container{
    display:flex;
    flex-direction: column;
    align-items: center;
    border: 5px solid;
    border-radius: 50px;
    padding: 20px;
    background-color: white;
}

#display{
    font-size: 4em;
    font-family: monospace;
    font-weight: bold;
    color: hsl(0,0%,30%);
    margin-bottom: 20px;
}

#controls button{
    font-size:1.5em;
    font-weight: bold;
    padding: 10px 20px;
    margin: 5px;
    min-width: 120px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    color: white;
}

#startbtn{
    background-color: green;
}
#startbtn:hover{
    background-color: darkgreen;
}

#stopbtn{
    background-color: red;
}
#stopbtn:hover{
    background-color: darkred;
}

#resetbtn{
    background-color: blue;
}
#resetbtn:hover{
    background-color: darkblue;
}