body{
    margin: 0;
    padding: 0;
    background-color: crimson;
    font-family: cursive;
}
#btn1,#btn2,#btn3,#btn4,#btn5,#btn6,#btn7,#btn8,#btn9,#btn10,#btn11,#btn12,#btn13,#btn14,#btn15,#btn16,#btn17,#btn18,#btn19,#btn20,#btn21,#btn22,#btn23,#btn24,#btn25{
    width: 50px;
    height: 50px;
    outline: none;
    border: none;
    background-color:white;
    font-size: 2em;
    font-family: cursive;
}
ul{
    list-style: none;
    word-spacing: 30px;
}
ul li{
    display: inline;
    font-family: cursive;
    font-size: 2em;
}