body{
    background-color: dimgray;
}

.container{
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.digit{
    font-size: 115px;
    font-weight: bold;
}

.txt{
    font-size: 25px;
    font-weight: bold;
    margin-right: 8px;
}

.btn-container{
    margin-top: 30px;
}

.btn {
    padding: 7px 17px;
    font-weight: 600;
    font-size: 21px;
    cursor: pointer;
    background-color: antiquewhite;
    margin: 0 10px;
    border: none;
    box-shadow: 0 0 18px;
}

.btn:active{
    scale: 0.98;
}

.cr-dis{
    cursor:not-allowed;
}

#start:hover{
    background-color: seagreen;
    color: #fff;
}

#stop:hover{
    background-color: rgb(36, 109, 168);
    color: #fff;
}

#reset:hover{
    background-color: rgb(192, 41, 41);
    color: #fff;
}

.footer{
    font-size: large;
    display: block;
    position: fixed;
    bottom: 0;
    right: 10px;
}

@media (max-width: 746px){
.digit{
    font-size: 80px;
}

.txt{
    font-size: 20px;
}

.btn {
    padding: 7px 15px;
    font-weight: 600;
    font-size: 18px;
}

}

@media (max-width: 516px){
.digit{
    font-size: 60px;
}

.txt{
    font-size: 16px;
}

.btn {
    padding: 6px 14px;
    font-weight: 600;
    font-size: 16px;
}

.footer{
    font-size: 12px;
}

}

@media (max-width: 425px){
.digit{
    font-size: 40px;
}

.txt{
    font-size: 12px;
}

.btn {
    padding: 5px 12px;
    font-weight: 600;
    font-size: 12px;
}

}