body{
    text-align: center;
    margin: 0;
}

.header2{
    background-color: gray;
    color: white;
    padding: 20px;
    margin: 0;
}

#stop{
    background-color:rgb(240, 26, 26);
}

.btn{
    width: 500px;
    height: 70px;
    padding: 15px;
    border-radius: 5px;
    display: inline-block;
    color: white;
    font-size: 20px;
    box-shadow: 3px 3px 2px rgb(57, 58, 58);
}

.btn:hover{
    cursor: pointer;
}

.btn:active{
    box-shadow: none;
    position: relative;
    top: 3px;
    left: 4px;
}

#start{
    
    background-color: rgb(4, 4, 219);
}



#reset{
    background-color: rgb(100, 101, 102);
    margin: 15px;
}

#timer{
    display: inline-block;
    font-size: 36px;
    border: 1px solid gray;
    padding: 50px;
    width: 600px;
    background-color: black;
    color: white;
    box-shadow: 1px 1px 3px rgba(0,0,0,.5);
    border-radius: 8px;
}