*,
*:before,
*:after{
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}
body{
   
    background-color:black;
}
.container{
    background-color: rgb(0, 0, 0);
    width: 25%;
    min-width: 200px;
    position: absolute;
    transform: translate(-50%,-50%);
    top: 80%;
    left: 50%;
    padding: 20px 0px;
    padding-bottom: 10px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.621);
    color: white;
}
.timer-display{
    position: relative;
    width: 90%;
    background-color: rgb(0, 0, 0);
    left: 4%;
    font-size: 25px;
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: space-around;
    border-radius: 5px;
    box-shadow: 0 0 20px rgb(0, 0, 0);
}
.buttons{
    width: 90%;
    margin: 60px auto 0 auto;
    display: flex;
    justify-content: space-around;
}
.buttons button{
    width: 100px;
    height: 45px;
    background-color: rgb(0, 0, 0);
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    outline: none;
}
.buttons button :hover{
    background-color: white;
    color: black;
}