body{
    background-image: url('e7230ef6014bf4ad6aca2202f64fd87d.jpg');
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.timer{
    background-color:rgb(1, 1, 5);
    color:rgb(245, 11, 11);
    width: 30%;
    margin: auto;
    height: 160px;
    border: 2px solid black;
    text-align: center;
    margin-top: 200px;
    padding: 50px 10px 20px;
    font-size: 85px;
    font-weight: bold;
    border-radius: 0 60px;
    border-collapse: collapse;
    box-shadow: -5px 8px 15px;
}
button{
    padding: 18px;
    border-collapse: collapse;
    border-radius: 50%;
    background-color:rgb(1, 1, 5);
    margin: 15px;
    border :2px solid grey;
    color: grey;
    /* position: absolute; */

}

.timer__controls{
    display: flex;
    flex-direction: row;
    width:30%;
    margin:auto;
    height: 120px;
    padding: 2px;
    
}

.timer__controls--start:hover{
background-color: green;
color: black;
}

.timer__controls--set:hover{
background-color: dodgerblue;
color: black;
}
.invisible{
    display: none;
}