body{
    padding: 0;
    margin: 0;
    font-family: sans-serif;
}
#backGround{
    background-color: rgb(0, 170, 179);
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
#number{
    color: #EEEEEE;
    font-size: 150px;
    margin: 20px;
}
#number:hover{
    color: #FF5722;
}
button{
    color: #303841;
    font-size: medium;
    background-color: #EEEEEE;
    border: 0.5px #303841 solid;
    padding: 10px 30px;
    margin: 15px;
    border-radius: 5px;
}
button:hover{
    background-color: #FF5722;
    color: #EEEEEE ;
}
button:active{
    box-shadow: 1px 1px 5px 1px #303841 ;
}
@media screen and (max-width:350px){
    #number{
        font-size: 80px;
    }
    button{
        font-size: small;
        padding: 10px 10px;
        margin: 3px;
    }
}